# What is the exact value of cos 5pi 6?

-0.866025403

0.5

## How do you find the value of cos 5pi?

Answer: Since we are considering a unit circle the value will be negative one. Negative sign is used because u03c0 lies on the negative x-axis. Therefore,cos5u03c0x3du22121 .

#NAME?

## What is the exact value of 5pi 6?

Make the expression negative because secant is negative in the second quadrant. The exact value of sec(u03c06) sec ( u03c0 6 ) is 2u221a3 . Multiply 2u221a3 by u221a3u221a3 .

u2212u221a3/2

0

## What is the value of sin 5pi by 3?

Hence, the principal value of sin-1(sin 5u03c0/3) is -u03c0/3.

## How do you find the exact value of cos 5pi?

The value of cos 5pi/6 can be calculated by constructing an angle of 5u03c0/6 radians with the x-axis, and then finding the coordinates of the corresponding point (-0.866, 0.5) on the unit circle. The value of cos 5pi/6 is equal to the x-coordinate (-0.866). u2234 cos 5pi/6 x3d -0.866.

## How do you find the value of cos 5pi 6?

The value of cos 5pi/3 can be calculated by constructing an angle of 5u03c0/3 radians with the x-axis, and then finding the coordinates of the corresponding point (0.5, -0.866) on the unit circle. The value of cos 5pi/3 is equal to the x-coordinate (0.5). u2234 cos 5pi/3 x3d 0.5.

## How do you find the value of cos 5pi 3?

1 Answer. sin(5u03c02)x3d1 , cos(5u03c02)x3d0 , tan(5u03c02)x3du221e , cot(5u03c02)x3d0 , sec(5u03c02)x3du221e and csc(5u03c02)x3d1 .

## What is the exact value of 5π 6?

The value of sec 5pi/6 is equal to -1.154700

## What are the primary trig ratios for the angle with Radian measure 5pi 6?

Tan 5pi/6 is the value of tangent trigonometric function for an angle equal to 5u03c0/6 radians. The value of tan 5pi/6 is -1/u221a3 or -0.5774 (approx).

## What is cos pi over 6 in radians?

The value of cos pi/6 is 0.8660254. . .. Cos pi/6 radians in degrees is written as cos ((u03c0/6) xd7 180xb0/u03c0), i.e., cos (30xb0).

## What is cos 5pi 4 in radians?

The value of cos 5pi/4 is -0.7071067. . .. Cos 5pi/4 radians in degrees is written as cos ((5u03c0/4) xd7 180xb0/u03c0), i.e., cos (225xb0).

0.5

-0.5774

## What is the exact value of cot 5pi 4?

Split 5u03c012 5 u03c0 12 into two angles where the values of the six trigonometric functions are known.Apply the sum of angles identity. The exact value of cot(u03c06) cot ( u03c0 6 ) is u221a3 .