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Anonymous users2024-02-07The trigonometric function table is as follows:
The numerical family nature of trigonometric functions is the mapping between a set of angles of any angle and a set of variables of a ratio. The usual trigonometric functions are defined in a planar Cartesian coordinate system. The domain is defined as a field of real numbers.
Another definition is in a right triangle, but not completely. Modern mathematics describes them as the limits of an infinite series of numbers and the solution of differential equations, extending their definition to complex numbers.
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Anonymous users2024-02-06Sine (sin) is equal to the opposite side than the hypotenuse;
Cosine (cos) is equal to the adjacent edge than the hypotenuse;
Tangent (tan) is equal to the opposite side of the adjacent side;
Cotangent (cot) is equal to the adjacent edge compared to the opposing edge;
secant (sec) is equal to the hypotenuse adjacent edge;
Cosecant (csc) is equal to the hypotenuse to the opposing edge.
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Anonymous users2024-02-05sin0=0
sin30=
sin45 = 2 of the root of the half
sin60 = Root of the second half number 3
sin90=1
cos0=1
cos30 = Root number 3 of the halfs
cos45= 2 of the root of the half
cos60=
cos90=0
tan0=0
tan30 = 3 thirds of the root number
tan45=1
tan60= root number 3
Tan90 = None.
cot0 = none.
cot30= root trumpeter Hu 3
cot45=1
cot60 = 3 of the root of the third
cot90=0
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Anonymous users2024-02-04(1) Special angular trigonometric values.
sin0=0
sin30=
sin45 = 2 of the root of the half
sin60 = Root of the second half number 3
sin90=1
cos0=1
cos30 = Root number 3 of the halfs
cos45= 2 of the root of the half
cos60=
cos90=0
tan0=0
tan30 = 3 thirds of the root number
tan45=1
tan60= root number 3
tan90=None.
cot0 = none.
cot30 = root number 3
cot45=1
cot60 = 3 of the root of thirds
cot90=0
2) Trigonometric values of any angle of 0° 90°, check the trigonometric function table. (3) Changes in the value of acute trigonometric functions.
i) Acute trigonometric values are all positive.
ii) When the angle varies between 0° 90°, the sine value increases (or decreases) with the angle decreases (or decreases) with the angle The cosine decreases (or increases) with the increase (or decrease) of the angleThe tangent increases (or decreases) with the angle The cotangent decreases (or increases) with the increase (or decrease) of the angle (iii) When the angle changes between 0° 90°, 0 sin 1, 1 cos 0, when the angle changes between 0° < 90°, tan >0, cot >0.
"Acute trigonometry" belongs to trigonometry, which is an important part of the field of "space and graphics" in the Mathematics Curriculum Standards. According to the "Mathematics Curriculum Standards", the content of trigonometry in secondary school mathematics is divided into two parts, the first part is placed in the third stage of compulsory education, and the second part is placed in the high school stage. In the third stage of compulsory education, the content of acute trigonometric functions and solving right triangles is mainly studied, and the content of this set of textbooks is arranged in one chapter, which is the chapter "Acute Trigonometric Functions".
Trigonometry in high school is the main part of trigonometry, including solving oblique triangles, trigonometric functions, inverse trigonometric functions, and simple trigonometric equations. Whether it is from the point of view of content, or from the point of view of the way of thinking about the problem, the former part is an important foundation for the latter part, and mastering the concept of acute trigonometric functions and the method of solving right triangles is an important preparation for learning trigonometric functions and solving oblique triangles.
Attached: Trigonometric function value table.
sin0=0,sin15=（√6-√2)/4 ,sin30=1/2,sin45=√2/2,sin60=√3/2,sin75=(√6+√2)/2 ,sin90=1,sin105=√2/2*(√3/2+1/2)sin120=√3/2
sin135=√2/2
sin150=1/2
sin165=（√6-√2)/4
sin180=0
sin270=-1
sin360=0
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Anonymous users2024-02-03sin30 ° one-half.
The root of the sin45° half of the number two.
sin60°
The root of the second is called three respects.
COS30° Root No. 3.
cos45° half root number two.
cos60° one-half.
tan30 ° three points chop friend chop root chunchang number three.
tan45°
tan60°
Root number three. I hit it by hand.
Hehe. The watchtower owner.
tan opposite side to adjacent edge.
It can also be said to be a slope ratio.
sin opposite sides than hypotenuses.
The adjacent edge of cos is more than the hypotenuse.
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Anonymous users2024-02-02The trigonometric values are as follows:
Trigonometric functions are a class of functions in mathematics that belong to the transcendental functions of elementary functions. Their essence is a mapping between a set of arbitrary angles and a set of variables with a ratio.
The usual trigonometric function is defined in a planar Cartesian coordinate system, which defines the entire field of real numbers. Another definition is in a right triangle, but not completely.
It is impossible to get a fixed triangle by knowing only one corner and one side, and only by knowing three sides or two corners can a triangle be established, and then it can be solved by the cosine theorem or the sine theorem. Trigonometric functions are generally used to calculate the edges of unknown lengths and unknown angles in triangles, and have a wide range of uses in navigation, engineering, and physics. >>>More
3.Solution: tan(a+b)=(tana+tanb) (1-tanatanb).
tan∏/4=(tana+tanb)/(1-tanatanb)1=(tana+tanb)/(1-tanatanb)tana+tanb=1-tanatanb >>>More
You make the middle line on the hypotenuse, and you get an angle of 30 degrees.
Trigonometric formulas include the sum sum formula, the sum difference product formula, the triple angle formula, the sine double angle formula, the cosine double angle formula, the cosine theorem, etc. >>>More
Next to the trigonometric function sail are: sine function, cosine function, tangent function, cotangent function, secant function, cosecant function rollover, and the positive and negative cases of each quadrant are as follows: (the format is "quadrant" or -"). >>>More