Sunday

November 23, 2014

November 23, 2014

Posted by **Gregor** on Sunday, October 23, 2011 at 6:42pm.

cos2theta=2-sec^2theta/sec^2theta

**Answer this Question**

**Related Questions**

Calculus - What is the integral of 1-tan^2theta from 0 to pi/3? Using the ...

Math - Prove: [(tan^2theta+1)(cos^2theta-1)]=1-sec^2theta

trig - Write each identity expression in terms of:1. cos theta= a. sin^2theta...

Math - 1)Find cos theta if sin theta=3/5 and 90 degrees<theta<180 degrees...

Pre-Calculus - Verify: 1/(1-sintheta) * 1/(1+sintheta) = sec^2theta sec^2theta ...

math - There are no typos and no work b/c I don't know how to do them. Thanks. 1...

trig - establish identity 5csc^2theta-3cot^2theta=2csc^2theta+3

Math - There are no typos and no work b/c I don't know how to do them. Thanks. 1...

trig - tan^2theta+6=sec^2theta+5

maths - if cot theta =7/8 , evaluate (1+sin^2theta)(1-sin^2theta)/(1+cost^2theta...