Saturday
December 20, 2014

Homework Help: Trig

Posted by Thanh on Tuesday, May 10, 2011 at 10:32pm.

Cos(2theta)=-1/2

There are 6 solutions, how do i solve this?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),...
trig - 2sin(x)cos(x)+cos(x)=0 I'm looking for exact value solutions in [0, 3&#...
trig - given that 1/2pi<theta<pi and sin theta=1/5, use appropriate ...
Math - sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),...
trig - solve the equation of the domain 0ܦȡ2 3cos^2theta - 5costheta -1 = ...
Prove or Disprove - Cos(X+y)cos(x-y)= cos^2theta - sin^2theta I foiled the left ...
trig - e.g. tan 315 = -1, does that work in our equation ?? Yes, thank you again...
trig - establish identity 5csc^2theta-3cot^2theta=2csc^2theta+3
trig - cos(+pi/2-theta)/csctheta+cos^2theta
Math - Prove: [(tan^2theta+1)(cos^2theta-1)]=1-sec^2theta

Search
Members