How could I turn 2sin5xcos3x into a sum of trig functions?
2 Answers
Aug 6, 2018
Explanation:
We know
Substitute ,
Aug 6, 2018
Explanation:
using the product to sum formula
∙x2sinxcosy=sin(x+y)+sin(x−y)
here x=5x and y=3x
2sin5xcos3x
=sin(5x+3x)+sin(5x−3x)=sin8x+sin2x