Friday

April 18, 2014

April 18, 2014

Posted by **Anonymous** on Sunday, March 20, 2011 at 11:46am.

1. cos^2a+sec^2a=2+sina

2. cot^2a+cosa=sin^2a

**Related Questions**

trig - How to do this one? (sina/1-cosa) + (1-cosa/sina) = Also, wanted to ask ...

math (trig) - i have some problems doing trig the first one is: Show that cos(x/...

trig - I need to count this: a) 1-tg^2a/1+ctg^2a, when sina =2/3 b) 1-tg^2a/1-...

Pre-Calculus - How can the following two identities be verified? 1. (cos^2y)/(1-...

Trig - Please help with this one. I've worked it out in so many ways and can't ...

trig - I need to prove equality. a) (sina + cosa)^2 -1 / ctga - sinacosa = 2tg^...

Math Trig - Find the Cartesian form of the parametric equation. x = (2a)(cot T) ...

verifying trigonometric identities - How do I do these problems? Verify the ...

trig - if sina,cosa,tana are in geometric progression then prove that cot^6a-cot...

Calculus - Simplify. State the nonpermissible values. 4a^2-1/4a^2-16*2-a/2a-1 ...