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I am having difficulties solving the following equation:

$$4\cos^2x=5-4\sin x$$

Hints on how to solve this equation would be helpful.

  • 1
    Try adding dollar signs around your equation, and back slashs before the cos and sin, to make the mathematics appear more visually appealing. For the above, I changed the equation to `$$4\cos^2x=5-4\sin x.$$` This yields $$4\cos^2x=5-4\sin x.$$2012-12-21
  • 1
    Hint: Do you know a trig identity you could substitute in for $cos^{2}x$ that use $sin^{2}x$? Then simplify and solve the remaining equation.2012-12-21
  • 3
    Does the answer sinx=1/2 sound right to everyone?2012-12-21
  • 0
    ye check my solution2012-12-21

4 Answers 4