cos^-1(cos (67π/29)) + sin^-1 (sin(84π/58) +tan^-1(tan(33π/29))
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Answer:
cos^-1(cos67π/29) + sin^-1(sin84π/58) + tan^-1(tan33π/29)
= 67π/29 + 84π/58 + 33π/29
=(67π/29 + 33π/29) + 84π/58
=100π/29 + 84π/58
=284π/58
=142π/29
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