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Grade 1110 grade science

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..

Profile image of sam
8 Years agoGrade 11
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1 Answer

Profile image of Mohd Mujtaba
8 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☺☺☺☺