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 |x| ≤ 1
⇒ ± x ≤ 1
⇒ x ≤ 1 or –x ≤ 1
⇒ x ≤ 1 or x ≥ -1
⇒ x ∈ [-1, 1]
Now also given cos (sin-1 x + cos-1 x)
We know that sin-1 x + cos-1 x = π/2
∴ cos (sin-1 x + cos-1 x) = cos (π/2) = 0