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OpenStudy (anonymous):
cos(x/2) - sinx = 0 how would i solve this using the half angle formula?
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OpenStudy (anonymous):
Well, what does the half-angle-formula tell you?
OpenStudy (anonymous):
well, what i have so far is: √1+cosx/2 - sinx = 0 √1+cosx/2 = sinx (√1+cosx/2)² = (sinx)² 1+cosx/2 = sinx² am i on the right track?
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