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Mathematics 21 Online
zarkam21:

C and D

zarkam21:

1 attachment
iGreen:

I don't think that's right...use the identity: \(\sf cos(x)sin(x)=\dfrac{sin(2x)}{2}\)

zarkam21:

So def A

iGreen:

Yes, I got that as well.

zarkam21:

ANd b

iGreen:

\(\Huge\checkmark\)

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