Difficult problems to do, please don t hesitate to teach!

1. Using the sinusoidal theorem, the answer is s*m (m+n+l)2, only 2 3 4, because 1 2 3 cannot form a triangle, 3 4 5 is a right-angled triangle, which can prove that the sum of squares of the two sides of the smaller triangle in the back is greater than the sum of the squares of the third side is already an acute triangle.

3. Because of the result 1, the values of the 3 cos may all be 1 or have a 1 and two 1s, but if there are 2 1s, it means that there are 2 obtuse angles (why do you think for yourself), so all 3 are 1s, then it means that a b c is a regular triangle.

4. The range of a is 0 60, and cosa is 1 2 1, so a is (1 root number 17) 2 to (1 root number 17) 2, and 0 is removed in the middle

5. D, it may be a parallelogram or a trapezoid.

1.Let sina=mk, sinb=nk, sinc=lk, and a sina=b sinb=c sinc=(a+b+c) (sina+sinb+sinc) (sinusoidal theorem and the properties of proportion), so a mk=s (m+n+l)k, so a=ms (m+n+l).

2.Let the three sides be a, a+1, and a+2 from small to large, and they correspond to a, b, and c. respectivelyYes.

cosc=[a+(a+1)square-(a+2)square] [2*a*(a+1)]<0....

cosa=[(a+1)square+(a+2)square-asquare] [2*(a+1)*(a+2)]>0....

solution, there is -10, so 03Because of the result 1, the values of the 3 cos may all be 1 or have a 1 and two 1s, but if there are 2 1s, it means that there are 2 obtuse angles, so all 3 are 1s, then it means that a b c is a regular triangle

1.I don't understand, is it a brain teaser?

2.There is only one: 2, 3, 4Because none of the others are.

3.In the Internet café, there is no time to do it.

4.The minimum inner angle a should be greater than 0 degrees and less than 60 degrees, and cosa is greater than 1 2 less than 1It's not hard to talk about that side again.

5.I think maybe d should be all of the above, right, hehe, I didn't look closely, it seems to be okay. It is okay to have two quadrilaterals where the sum of the angles is equal to 180 degrees.

Depending on your situation, go to English education and the like, come back to be a teacher, study abroad agent consulting, translation these, what school to apply to depends on your academic performance in school, and IELTS, like this kind of major IELTS requirements are higher, generally 7 points, and there are also requirements for individual items, not less than 6 or.

If you really can't reach it, you have to go to the language early, but you have to pay tens of thousands of extra dollars. In terms of schools, you don't have to consider the top ten, if the average score is above 80, you can try the top 20 schools, and then you can't apply for a few top 30, the specific school can be checked by yourself, you can also consult the intermediary, as long as the tuition is not in London (in fact, you basically have no possibility of going to London) is still not too expensive, a year in about 1120,000, will not exceed 150,000, the cost of living depends on the place, small places are cheaper, big cities are higher, generally 100,000 must be enough, so a year down, Save more than 200,000 yuan to read, and the problem of applying for school is not very big, it depends on whether you can afford this cost.

China's teaching method is to squeeze through the threshold, and when it is over, it depends on the seniority, and when it is over, it depends on the strength, which is a fact! If you want a diploma from a foreign university, you have to be in the United States There may be many people who think that it is the United Kingdom, but it is not You can know it if you look at the global university rankings I have a few friends who go to the United Kingdom The weather in the United Kingdom is not good Ordinary people are really not used to it After studying, they come back to work Or the United States is the most cost-effective, if you want to talk about tuition fees, no one can say with great certainty how much the tuition is there This thing is often changing And international students are not the same as studying abroad In short, I recommend you to the United States As for how to get a visa, you should find a powerful immigration and study abroad agency in China I hope my answer can help you I am also an international student for 7 years.

You can find a study abroad agent for specific consultation, very professional, New Oriental has an exhibition to study abroad is very good, it can be said to be a one-stop service.

Actual. Language majors can choose translation and media.

The UK is relatively cheaper, after all, there is only a one-year master's degree, and the comfortable life is about 300,000 RMB, which is about the same as a year.

Several universities in the UK have good media, Loughborough, Leeds. IELTS single subject or above, university average score above 80, almost.

This is very simple, the other party is a little shy, if the other party is a girl with a little introverted personality, or not very extroverted, this is normal, don't think too much, the more you think about it, the faster you look forward to it.

This is a self-boot of the graphics card is of little use to you, you can hold the light by entering "msconfig" in "run" and then return to the section beam wide car, open the "system slag before configuration utility", look for " in "startup", and then in c: windows system32, nvstartup", and remove the small hook in front of it. or 360 Security Guard is prohibited.

Want to rebuild your system? If you don't want to, try it with a quiet system light sales and shouting disk! Or if you can enter the system, what 360 security guard is used to fix it!

I've played this song, and to be honest, this song is very suitable for the rhythm of rumba, and if you insist on changing it to a pick, it will be a lot less flavorful. In fact, this rhythm type is not difficult You go to see Liu Tianli teaching guitar ** There is a special one to teach this rhythm type and the technique is also very good-looking......Hope it helps......

Finally, I hope you listen more and practice more ......The foundation should be solid. Especially the rhythm. I see you got the rhythm wrong when you first asked this question......Listen more, and every time you listen to it, you will have a new experience.

The fingering question asked later is not to be asked, the guitar is an auditory art, and what you should pursue is what kind of effect you show with the piano. It's not about which finger is used to show what effect ......

You should pursue the visual effect only when you ensure the timbre, the sound quality, etc. Study on your own, and as long as you can achieve the same sound, you should study ......And the fingering you asked later, if you like classical, do you know that there is a fingering method that quickly plucks a string, have you ever seen playing the lute? Oh, study it well, don't be in a hurry, ......The guitar isn't meant to be a one-year or two-year-old thing......

It is to use the index and middle fingers of the finger to take turns hooking upwards.

To change fate, the brother's thoughts must be clear first, and then he can give advice.

To put it simply, it is the new policy of the state, and there is an additional full-time professional master's degree. The difference is not too big, they are all the same work for the teacher. Specifically, you can look at the country's propaganda, which is on the ** in the postgraduate entrance examination.

If it's good, it's definitely a good point for academics, after all, there's no risk of corporate recognition.

5. Where is the school you apply for, you are counted as a candidate, because the test paper was changed there. If you take the test in Beijing, you are considered to be Class A.

6. The professional courses for the postgraduate entrance examination are determined by the school you apply for, and there will be instructions on the school, and there is an enrollment catalog or something.

7. Look at the school. It's not that there is no chance, but you can also adjust.

8. According to the demand, don't blindly report, waste money not to say, it may not work, if it has little effect on you, it will be a waste of money and a waste of time. What you learn in your head is what is useful to you, and the postgraduate entrance examination is not about how many classes you have registered. The choice of information, not to ask for more, but to be useful, each subject has a few you can use.

Again, the key depends on how much you have learned, and the postgraduate entrance examination is not a test of how many books you have bought, but a matter of how well you have mastered.

This is my advice for each subject for the postgraduate entrance examination, you can refer to it.

In addition, the upstairs is a bit wrong, there is no so-called research type, it should be a professional master's degree, and the academic type will definitely not be more difficult than the professional master's degree if you are employed. Academic master's degrees have always existed, and professional master's degrees appeared in '09. In the past, students didn't have such a statement, and they were biased towards theory and practice.

It's just that academic ones are more qualified to engage in theory than professional masters, after all, theoretical things are not something you can get out in a short time, and the two-year academic system of professional master's degree is not conducive to theory. Academic bias can be anything, this depends on the arrangement of the tutor and your choice. Professional master's degrees are relatively less selective.

Another difference between the two is that academic students can study for master's and doctoral degrees, while professional masters cannot.

The architecture department of Chongqing University is very good, do you know the old eight schools? It is one of the eight famous universities in the country with the strongest architecture, Chongqing University is one of them, and the Department of Architecture is A-class.

Civil engineering is basically divided in this way, in fact, you can see the literal meaning, the work engaged in by each profession.

The score line of each school is different, and the re-examination line of the major 09 years is 295. The most important thing is to see which school you want to apply for, and then you check its admission brochure with the subjects for the first examination and the subjects for the second examination.

ABC is mainly divided according to the region, the schools in the coastal areas are Class A, that is, the score line is the highest, and then the universities in China like Chongqing and Sichuan are divided into Class B, and then the universities in places like Xinjiang are Class C, if you want to apply for the school in Beijing is Class A, the score line is the highest, Class B is about 5 points lower, and C is 5 points lower than Class B.

Research and scholarship are a concept, and master's degrees in China are divided into professional and research-based. The professional type is the strong comprehensive ability of practical operation, and the academic type is the research and writing of theoretical knowledge. At present, the full-time graduate students of China's unified examination are basically academic research-oriented.

What school you plan to take the exam in, you can look at the exam subjects of that school, the subjects of the preliminary examination and the re-examination will be in it, and you can also check the recruitment of the previous year without it.

As long as your score in the first test is high enough, you don't have to worry about the retest, but it is best to contact the tutor in advance. If you are on the re-examination line of the institution you are applying for but do not pass the re-examination, the first time to understand the enrollment situation of other majors and other colleges in the school, take the initiative to contact the school and tutor to strive for the transfer to other schools or other majors that are not full, strive for the opportunity to re-test, and prepare for the re-examination, and strive not to fall off the list.

Applying for a class depends on your own level, politics is generally reported, because you don't know about politics and facts, the tutor has many years of experience to help you sort out the framework, the English for the postgraduate entrance examination is recognized as more difficult, and the scope of expansion is very wide, like you are still more confused, or you can go to register for a class, so that you can get a lot of professional, comprehensive answers, what class you apply for he will have a series of tutorials and study suggestions,. Haitian is not bad, you can go and see it.

My God, you have too many small questions.

According to your situation, it is recommended that you go to a company related to your profession to do sales work, so that you will not waste your profession and your expertise!

Selling requires skill, not just drinking and bribing opportunistically. There is really a big deviation in your understanding of sales in this way, and sales work exercises the overall quality of your person

For technical support, in fact, technical and sales are a marginal job, I think you should specialize in it! Either just do sales, or only do technology!

The sales threshold is low, but when you successfully use your skillful skills to sell, then you will be a successful marketer

Marketers and salespeople are not on the same level either.

Duplicate background layers, adjust color levels, and color saturation! Darken the hair color, and use the channel (there are many ways, you should accompany Jane to be better at the channel) to get the selection.