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sin5x + sinx =?
give me the answer fast.
iasked this question with ur exper priyanka but she didnot give me the answer may be she dont know maths..

sam , 7 Years ago
Grade 11
anser 1 Answers
Mohd Mujtaba

Last Activity: 7 Years ago

Sin5x+sinx=2sin (5x+x)/2.cos (5x-x)/2=2sin3x.cos2x. It is obtained by formula sinx+siny=2sin (x+y)/2.cos(x-y)/2 hope you understand thank☺☺☺☺

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