SOLUTION: Use identities to rewrite the equation sin 2x = cos x using only cos x (and numbers). Then find all solutions to the equation. Thanks

Algebra ->  Trigonometry-basics -> SOLUTION: Use identities to rewrite the equation sin 2x = cos x using only cos x (and numbers). Then find all solutions to the equation. Thanks      Log On


   

Question 925266: Use identities to rewrite the equation sin 2x = cos x using only cos x (and numbers). Then find all
solutions to the equation.
Thanks
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
sin 2x = 2sin x cos x
2sin x cos x = cos x
2sin x = 1
sin x = 1/2
(cosx, sinx) Summary Unit Circle
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