Can someone please help me with this problem? Thank you If possible, find the exact solutions algebraically (sin2x + cos2x)^2 =1
Last edited by mr fantastic; Dec 9th 2009 at 06:52 PM. Reason: Changed post title
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Originally Posted by >_<SHY_GUY>_< Can someone please help me with this problem? Thank you If possible, find the exact solutions algebraically (sin2x + cos2x)^2 =1 Expand the left hand side and apply the Pythagorean Identity. After simplifying, the equation becomes which can be easily solved in a number of ways.
Originally Posted by >_<SHY_GUY>_< Can someone please help me with this problem? Thank you If possible, find the exact solutions algebraically (sin2x + cos2x)^2 =1 yes make the sub u =2x The equation then turns into
I have removed my method since the method submitted by mr fantastic is much more efficient than mine.
Last edited by NOX Andrew; Dec 10th 2009 at 03:10 AM.
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