sin 3 cos 87+ cos 3 sin 87 =
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it will be solved by this trigonometry formula= sinAcosB + cosAsinB = sin(A+B)
sin 3 cos 87 + cos 3 sin 87 = sin(3+87)
=sin90
sin 3 cos 87 + cos 3 sin 87 = sin(3+87)
=sin90
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