The value of cos 15 degree upon sin 72 degree will be answer
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It should be cos15/ sin75 = cos15/sin(90-15)
=cos 15/cos 15 = 1
Otherwise if it is cos 15/ sin72, then = cos15/sin(90-18)
= cos 15/cos 18 you have to substitute the values of cos 15 and cos18
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