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3 cos 80° cosec 10°+ 2 sin 59° sec 31° |
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Answer» 3 cos 80 cosec10 + 2 sin 59 sec31 = 3 cos 80 cosec(90-10) + 2 sin 59 sec (90-31) = 3 cos 80 cosec80 + 2 sin 59 sec (59) = 3 cos80x1/ cos80 + 2 sin59 x 1/ sin59 = 3 + 2 = 5 . 3 cos 80 cosec10 + 2sin 59.sec31= 5 hope this will help you like me |
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