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2022-01-15Added 37 answers
2022-01-16Added 42 answers
Using sin(x+y)=sin(x)cos(y)+cos(x)sin(y) as suggested
This means that:
since cos(−x)=cos(x) and sin(−x)=−sin(x)
Adding sin(x−a) and sin(x+a) together gives,
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