Write the value of sin-1(sin \(\frac{3\pi}5\)). – InterviewSolution

1.

Write the value of sin-1(sin \(\frac{3\pi}5\)).

Answer»

Given sin^-1 (sin 3π/5)

= sin^-1 [sin (π – 2π/5)]

= sin^-1 (sin 2π/5)

= 2π/5

∴ sin^-1 (sin 3π/5) = 2π/5

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