Question

What is cos(2sin−1x)?

Answer 1

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HERE IS YR ANS


Answer:





cos(2sin−1x)=1−2x2.

Explanation:

Let sin−1x=θ, so that, x=sinθ,|x|≤1,θ∈[−π2,π2].

Now, Reqd. Value =cos(2sin−1x)=cos2θ=1−2sin2θ=1−2x2

HOPE it helps......