Question

5π
3
The value of cos-
is equivalent to

Answer 1

`(5\pi )/(3) = 0.5`

Explanation:

5π/3 radians = 5π/3 × (180°/π) = 300°

⇒ cos 5π/3 = cos 5π/3 = cos(300°) = 1/2 or 0.5