1.

Evaluate each of the following:sin-1(sin 2)

Answer»

sin–1(sin x) = x

Provided x ∈\([\frac{-\pi}2,\frac{\pi}2]\) ≈ [–1.57,1.57] 

And in our equation x is 3 which does not lie in the above range.

We know sin[π – x] = sin[x]

∴ sin(π – 2) = sin(2)

Also π–2 belongs in \([\frac{-\pi}2,\frac{\pi}2]\)

∴ sin–1(sin2) = π–2



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