use formula sinx+siny = 2 sin x+y/2 cos x-y/2 ; x= 7x and y = 3x
Written on July 19, 2018, 10:32 p.m.
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Answer of this question
Sin7x + sin3x = ?
Comment
use formula sinx+siny = 2 sin x+y/2 cos x-y/2 ; x= 7x and y = 3x
Written on July 19, 2018, 10:32 p.m.