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Cos(2theta)=-1/2 There are 6 solutions,

Solve each equation for exact solutions over the interval [0,360)where appropriate. Round approximate solutions to the nearest
1. 2 answers
2. asked by Ronald
3. 1,320 views
sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactlysin(2theta) cos(2theta)
1. 2 answers
2. asked by Sally
3. 1,804 views
Solve tan(40/90) for the double angle cos(2theta). I know I use the x^2 + y^2 = r^2 formula and cos(2theta) = cos^2theta -
1. 1 answer
2. asked by Anna
3. 673 views
here's the question: solve for cos(2theta)=1if you graph r= cos(2Theta) then graph r=1 you find that there are four places where
1. 1 answer
2. asked by Wulramm
3. 645 views
establish identity5csc^2theta-3cot^2theta=2csc^2theta+3
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2. asked by Anonymous
3. 453 views
What is the integral of 1-tan^2theta from 0 to pi/3?Using the identity tan^2theta=sec^2theta-1, I got my answer to be 2pi/3 -
1. 1 answer
2. asked by Rachel
3. 613 views
if cot theta =7/8 , evaluate (1+sin^2theta)(1-sin^2theta)/(1+cost^2theta)(1+co-^2theta)the answer should be 49/64 but i couldn't
1. 2 answers
2. asked by rani
3. 1,090 views
sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactlysin(2theta) cos(2theta)
1. 1 answer
2. asked by Larry
3. 2,040 views
Demostrate the validity of tan^2theta-sin^2theta=sin^4theta sec^2theta
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2. asked by Mb
3. 882 views
Cos(2theta)=-1/2There are 6 solutions, how do i solve this?
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2. asked by Thanh
3. 768 views