Trig Identity

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May 27th 2011, 12:07 AM
dagbayani481

Trig Identity

Hey guys, I need a good refresher on identities. It has been awhile and Finals week is coming up. I'm stuck on this practice question our teacher gave us:

Simplify: $\frac{1+secx}{sinx+tanx}$

Edit: for some reason latex isn't working right for me but the following equation is as follows:
(1+secx)/(sinx+tanx)

I believe this simplifies to cscx but I can't seem to figure out how to get to it.
May 27th 2011, 12:49 AM
Prove It

Start by writing everything in terms of sin(x) and cos(x), then getting common denominators...
May 27th 2011, 01:21 AM
sa-ri-ga-ma

Quote:

Originally Posted by dagbayani481

Hey guys, I need a good refresher on identities. It has been awhile and Finals week is coming up. I'm stuck on this practice question our teacher gave us:

Simplify: $\frac{1+secx}{sinx+tanx}$

Edit: for some reason latex isn't working right for me but the following equation is as follows:
(1+secx)/(sinx+tanx)

I believe this simplifies to cscx but I can't seem to figure out how to get to it.

tan(x) can be written as sin(x)/ cos(x) = sin(x)*sec(x),. Put this in the problem and simplify.