Sin35×cos55 what is the ans of thi sum
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sin 35×cos 55
sin 35×cos(90-35)
sin 35×sin 35= sin^2 35
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jasmi74:
it can be canceled know
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sin35× cos 55
sin(90°-55)× cos 55
cos 55× cos 55 (since sin(90°- theta ) =costheta
=1
therefore and is 1
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