How can I simplify this expression:

f(theta)= sqrt(1+cos(4theta))

by eliminating the radical? Is there a specific idenity I have to use?

Thank you, I appreciate any help!

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- August 29th 2010, 05:30 PMyzobelSimplify expression by eliminating radical
How can I simplify this expression:

f(theta)= sqrt(1+cos(4theta))

by eliminating the radical? Is there a specific idenity I have to use?

Thank you, I appreciate any help! - August 29th 2010, 05:49 PMpickslides
Maybe this can help

Therefore

You still have in the desired expression. Is this helpful at all? - August 29th 2010, 05:54 PMyzobel
Very helpful. Thank you!