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OpenStudy (anonymous):
Find all solutions to the equation: sin^2x= 1 - 2(cos^2x)
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OpenStudy (anonymous):
sin^2x = (sin^2x + cos^2x) - 2cos^2x
OpenStudy (anonymous):
0 = -cos^2x
OpenStudy (anonymous):
cosx = 0
OpenStudy (anonymous):
which is at x = 90 degrees and 270 degrees. or pi/2 and 3pi/2
OpenStudy (anonymous):
Ask if you have questions
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OpenStudy (anonymous):
Wow, the speed it took you to solve that incredible! I'm going to post a harder problem that I actually have quite a bit of trouble with in a minute. Thanks again!
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