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2014-06-27T00:39:31+05:30

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(cosec square 45 degree + sin 30 degree )(tan 45 degree + sec square 45 degree) / sin square 60 degree cos square 45 degree = (2 +1/2)(1+2)/(3/4*1/2)=(5/2*3)/(3/8)=15/2*8/3=5*4=20answer
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