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Find the value of: Sin^-1(sin10) + sin^-1(sin20) + sin^-1(sin30) + sin^-1(sin 40)

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Find the value of:

Sin-1(sin10) + sin-1(sin20) + sin-1(sin30) + sin-1(sin 40)

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1 Answer

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Best answer

Sin-1(sin10) + sin-1(sin20) + sin-1(sin30) + sin-1(sin 40)

= (3π - 10) + (20 - 6π) + (30 - 10π) + (13π - 40)

= 0

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