1. ## Integral of (sinx+cosx)^2

How do you integrate this?
$(sinx+cosx)^2$

2. Originally Posted by Johnt447
How do you integrate this?
$(sinx+cosx)^2$
Expand to get:
$\sin^2{x} + 2\sin{x}\cos{x} + \cos^2{x} = 1 + \sin{2x}$

Surely you know what to do next?

3. Originally Posted by Chop Suey
Expand to get:
$\sin^2{x} + 2\sin{x}\cos{x} + \cos^2{x} = 1 + \sin{2x}$

Surely you know what to do next?
yeah I do cheers, it's so obvious now lol.

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# dx/(sinx cosx)^2

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