SOLUTION: What are the steps I should take to solve for x in this trigonometric equation? {{{ cos^2(x)-sin^2(x)=sin(x) }}}

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Question 986789: What are the steps I should take to solve for x in this trigonometric equation?

Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
and to first solve for u



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u is a variable. ANY variable other than x will work. Just pick and use a variable to help with variable management in the solution process.
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!
What are the steps I should take to solve for x in this trigonometric equation? 

 --------> 

 -------- Substituting  for 





            OR            (ignore)

, and  

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