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## #1 Re: Help Me ! » Trig Identities » 2009-12-02 12:56:52

Alrighty, thank you both so much! I managed to figure out most of them and found that they aren't all very hard once you understand the basic concepts. Thanks

## #2 Re: Help Me ! » Trig Identities » 2009-12-02 09:06:29

Oops! For the second equation, the sad face should be = then bracket...

Fixed

## #3 Help Me ! » Trig Identities » 2009-12-02 09:05:08

raindropsonroses
Replies: 6

Hello everyone, I was wondering if someone could help me prove a couple trig identities for am assignment?
Here they are:

(cosx/1+sinx) + (cosx/1-sinx)= 2/cosx

(cosx/1+sinx)=(1-sinx/cosx)

(sinx+tanx/cosx+1)=tanx

1+(sinx+cosx)(cosx-sinx)=2cos*squared*x

(cosx+sinxtanx)/tanx=1/sinx

1/sin*squared*x + 1/ cos*squared*x = 1/sin*squared*xcos*squared*x

I know it's a lot and I hope it's not too confusing the the squares and whatnot.
Help would be greatly appreciated!

Thanks :)