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## What is the value of cos 2 pi by 3?

Trigonometry Examples The exact value of cos(π3) cos ( π 3 ) is 12 .

## What is the value of cos 4 pi by 3?

Important Angle Summary

240° 4π/3 -1/2
270° 3π/2 0
300° 5π/3 1/2
315° 7π/4 √2/2

## What is 2π?

An angle measured in radians is the ratio of the arc length of a circle subtended by that angle, divided by the radius of the circle. Since 90° = π / 2 radians, to four significant figures, one radian equals 180°/ π = 57.30°. There are 2π radians in a full circle. (So 2π radians should equal 360°.

## What is cos PI 3 unit circle?

The exact value of cos(π3) cos ( π 3 ) is 12 . 12.

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

Trigonometry Examples The exact value of sin(π3) sin ( π 3 ) is √32 .

0.7071

## What is the Cofunction of Cos Pi 4?

Trigonometry Examples The exact value of cos(π4) cos ( π 4 ) is √22 .

0

## How many radians is PI 4 degrees?

Table of angles

15° Pi / 12 16.67
30° Pi / 6 33.33
36° Pi / 5 40.00
45° Pi / 4 50.00