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Show that sin 23 degrees + sin 37 degrees = cos 7 degrees Show that sin 23 degrees + sin 37 degrees = cos 7 degrees
Dear Varad,Apply sinc + sind formulae:SinC + SinD = 2Sin[(C+D)/2]Cos[(C-D)/2]thus it becomes, = > 2sin30cos7 = 2*cos7/2 = cos7
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