Posted by **Yadira** on Monday, April 30, 2012 at 12:23am.

Prove the identit: cosxcotx+sinx=cscx

- Pre-Calc/Math -
**visoth**, Monday, April 30, 2012 at 1:00am
1) rewrite cosx (cosx/sinx) + sinx = csc x

2) cosx^2/sinx + sinx = csc x

3) multiply sinx by (sinx/sinx) to get same denominator

this gives you cosx^2/sinx + sinx^2/sinx = cscx

4) combine your fractions

(cosx^2 + sinx^2)/sinx = cscx

5) rewrite numerator

1/sinx= csc x

and there you go it is proven (you have to know your trig identity to do this so look them up if you dont know them)

- Pre-Calc/Math -
**Yadira**, Monday, April 30, 2012 at 1:05am
Thank You! :D

- Pre-Calc/Math -
**visoth**, Monday, April 30, 2012 at 1:11am
no problem lol this one almost had me stump for alittle

- Pre-Calc/Math -
**Yadira**, Monday, April 30, 2012 at 1:11am
Ohh it was hard me :/ .Do you think you can answer my other questions?

## Answer this Question

## Related Questions

- pre calc - prove identity cscx-(cosx)(cotx)=sinx
- Trig Help - Prove the following: [1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx...
- Pre-Calculus - Find a numerical value of one trigonometric function of x if tanx...
- Precalculus/Trig - I can't seem to prove these trig identities and would really ...
- Math - I'm only aloud to manipulate one side of the problem and the end result ...
- precalc - verify the identity ((cosxcotx)/(1-sinx))-1=cscx
- Math - Im really struggling with these proving identities problems can somebody ...
- drwls - My previous question: Verify that (secx/sinx)*(cotx/cscx)=cscx is an ...
- Pre-Cal - How do I do these questions? I'm supposed to prove them so that both ...
- trig - express this in sinx (1/ cscx + cotx )+ (1/cscx- cotx) i got 2sinx is ...

More Related Questions