SOLUTION: cos (squared) theta = 1/2

SOLUTION: cos (squared) theta = 1/2

Algebra.Com

Question 800158: cos (squared) theta = 1/2
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
cos^2 (theta) = 1/2
cos theta = 1/root2
theta = 45 degrees, 315 degrees, 45 + 360n, 315 + 360n
theta = Pi/4, 7Pi/4, Pi/4 + 360n, 7Pi/4 + 360n.
Hope this helps.
:-)
RELATED QUESTIONS
Which expression is equivalent to cos 2 theta for all values of theta: cos squared... (answered by lwsshak3)

solve the equation over interval [0,360) (2 cos squared theta ) + (2 cos theta) - 1 = 0 (answered by lwsshak3)

Verify Cos(theta) / (1+cos(theta)) + cos(theta)/(1-cos(theta)) = 2 cot(theta)... (answered by Edwin McCravy)

cos 2 theta + 3 cos theta... (answered by Boreal)

Sin^2(theta)/1+cos(theta)=1-cos(theta) (answered by Alan3354)

Prove tan squared theta times cos squared theta minus 1 divided by tan squared =... (answered by Edwin McCravy)

1+sin theta=2 cos^2... (answered by Alan3354)

sin^2 theta = cos theta + 1 (answered by Alan3354)

Prove the following identity : (cos^2 theta - sin^2 theta)/(cos^2 theta + sin theta cos... (answered by MathLover1)