3 years ago

Cos(x/5)sin(x/5)=1/2[sin(2x/5) true or false

1 answer:

6 0

Sin2x=2sinxcosx
sin2x/5=2sinx/5cosx/5
hence the nuber 2 multiply by cosx/5sinx/5 can be divided on the other side
hence its true

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