What is the value of 1 30?

Because the respect pin cos0°sin270°=1*(-1)=-1;;; 2cos180°=-2;;;tan45=1

So the value of cos0 ° sin270 ° + 2cos180 ° tan45 ° = -1 + (-2) = -3,6, cos0 ° sin270 ° + 2cos180 ° tan45 °? How much.

A single sin270° = 1 which I know, but the manuscript sends cos0°sin270° two connected together does not know what it means.

Untie. sin70sin65-sin20sin25sin70cos25-cos70sin25sin(70-25)

sin(45)

You Ladul 2 Shen Companion Cave 2

According to your question, we can list the number calculation, we can know 5 root number 8 5 2 root number 2 10 root number 2 10 root number 2 10 .

Then 2 root number 32 root number 50 2 4 root number 2 5 root number 2 2 4 5 2 80, from which we can know the original formula.

From this, we can show that the final result of the equation is negative.

Answer: Root number 4 + root number 4 + root number 4 = 2 + 2 + 2 = 6

The arithmetic square root of 4 is 2.

This can be calculated using the following methods:

First of all, we need to know in which interval 180° is in the trigonometric function. When finding the value of a trigonometric function, we usually evaluate the value in the range of angles from 0° to 360°, and 180° belongs to the second range of this range of angles, i.e. 180° to 360°.

For cos180° and sin180°, we can use the periodicity of the trigonometric function to find their values, since they are both periodic in the angle range of 0° to 360°, i.e. they are repeated in the angle range of 0° to 360°. The value of cos180° is equal to the value of cos0°, while the value of sin180° is equal to the value of sin0°. Since cos0°=1 and sin0°=0, cos180°=1 and sin180°=0.

For tan180°, we can use the conversion formula of tan(x) = sin(x) cos(x) to evaluate the value, since we have already found the values of sin180° and cos180°. Since sin180°=0, cos180°=1, tan180°=sin180° cos180°=0 1=0.

In summary, COS180°=1, Sin180°=0, and Tan180°=0.

Extended Information: Pi is the ratio of the circumference of a circle to its diameter, generally represented by Greek letters, and is a mathematical constant that is prevalent in mathematics and physics. It is also equal to the ratio of the area of the circle to the square of the radius.

It is the key value to accurately calculate the geometric shape of the circumference, area of the circle, and the volume of the sphere. In analytics, it can be strictly defined as the smallest positive real number x satisfying sin x = 0.

Pi is represented by the Greek letter (pronounced pài) and is a constant (approximately equal to, representing the ratio of the circumference to the diameter of a circle. It is an irrational number, i.e., an infinite non-cyclic decimal. In daily life, it is common to approximate the approximate rate of pi.

4 Bigan No. 2

4/2 times the root number 2

2 times the root number 2

This is a must-remember, if you don't know how to do it, you will draw a picture of Ling Xian Sakura and want to vertical images.

You fight the bridge rock to eliminate the good:

The answer is such as the base of the royal majesty:

sin30°=1/2

cos30°=√3/2

The three-wise biangular functions of these special bio slag angles need to be memorized.

sin30°=1 bond group 2; cos30° = 3 2 , these are special bright key trigonometric functions, you must remember it.

The value of sin30 degrees is the value of degrees, and the value of 2 roots is number 3.

sin30° = This is something that every pure traveler infiltration student should remember.

cos30°=You need to look up the trigonometric function table.

sin30°=1/2 cos30°=√3/2

Need to memorize the ante chain to disturb the usual boring Dan with trigonometric values:

sin0°=0 cos0°=1 tan0°=0sin30°=1 2 cos30°= 3 2 tan30°= 3 3sin45°= 2 2 cos45°= 2 2 tan45°=1sin60°= 3 2 cos60°=1 2 tan60°= 3sin90°=1 cos90°=0 tan90°=not exists.

sin180°=0 cos180°=-1 tan180°=0

sin30° is equal to 1 2 cos30° is equal to the root number of twoths. Look

For special values that need to be memorized, sin30 degrees = 1/2, cos30 degrees = 2 roots number 3

The value of sin30° is and the value of cos30° is . This is because in the trigonometric brightening function, sin is the ratio of the opposite edge to the hypotenuse, and cos is the ratio of the adjacent edge to the hypotenuse. In a 30-degree right-angled triangle, for a 30-degree angle, the length of the opposite side is half the length of the hypotenuse, and the length of the adjacent side is 3 times the length of the root number.

Therefore, sin30° = 1 2, cos30 ° = 3 2=. Hopefully, this will help you understand the disadvantages and calculations of sin and cos in trigonometric functions.