# Integration of trigonometric functions

• December 18th 2011, 09:39 AM
Furyan
Integration of trigonometric functions
Attachment 23104
Hello I've attached a question with the working I've done so far. I'd really appreciate it if someone can tell me if I've approached the problem correctly.

Thank you.
• December 18th 2011, 10:06 AM
ILikeSerena
Re: Integration of trigonometric functions
Hi Furyan! :)

Yep. You approached the problem correctly.
The only thing missing is that you didn't handle the integral boundaries yet.
You appear to have dropped them.

So you should have:
$(-e^{\cos x + 1}) |_0^{\pi/2}$

Do you know how to evaluate this?
• December 18th 2011, 10:17 AM
Furyan
Re: Integration of trigonometric functions
Hi ILikeSerena

Thank you!:)

It was the integration I wasn't sure about so I just left the limits out, but I shouldn't get in the habit of doing that.

I can evaluate

$(-e^{\cos x + 1}) |_0^{\pi/2}$

Thank you