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Cos(x/5)sin(x/5)=1/2[sin(2x/5)] A. True B. False ...?

Cos(x/5)sin(x/5)=1/2[sin(2x/5)] A. True B. False ...?
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5 votes
Cos(x/5)sin(x/5)=1/2[sin(2x/5)]

A. True B. False ...?

User Jumand
by
8.7k points

1 Answer

3 votes
As I see this equation cos(x/5)sin(x/5)=1/2[sin(2x/5)] is correct. So it's true. Usr this trick to simplify the equation and check it. cos(u)sin(v) = 1/2[sin(u+v)+sin(u-v)]
User Stephan Tolksdorf
by
7.6k points
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