Answer each of the following questions in one word or one sentence or as per exact requirement of the question:
Write the value of 
.
Given cos-1 (cos 2π/4)
We know that cos-1 (cos θ) = θ
= 2π/4
= π/2
∴ cos-1 (cos 2π/4) = π/2
1
Answer each of the following questions in one word or one sentence or as per exact requirement of the question:
Write the value of .
Given cos-1 (cos 2π/4)
We know that cos-1 (cos θ) = θ
= 2π/4
= π/2
∴ cos-1 (cos 2π/4) = π/2