Answer each of the following questions in one word or one sentence or as per exact requirement of the question:
Evaluate: 
.
Given sin-1 (sin 3π/5)
We know that sin-1 (sin θ) = π – θ, if θ ∈ [π/2, 3π/2]
= π – 3π/5
= 2π/5
∴ sin-1 (sin 3π/5) = 2π/5
1
Answer each of the following questions in one word or one sentence or as per exact requirement of the question:
Evaluate: .
Given sin-1 (sin 3π/5)
We know that sin-1 (sin θ) = π – θ, if θ ∈ [π/2, 3π/2]
= π – 3π/5
= 2π/5
∴ sin-1 (sin 3π/5) = 2π/5