SOLUTION: 2-2cos^2(x)-(radical2)sinx=0 I got sinx=radical2/2 but i dont think this is right.

Algebra ->  Trigonometry-basics -> SOLUTION: 2-2cos^2(x)-(radical2)sinx=0 I got sinx=radical2/2 but i dont think this is right.      Log On


   

Question 950280: 2-2cos^2(x)-(radical2)sinx=0
I got sinx=radical2/2 but i dont think this is right.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
2-2cos%5E2%28x%29-%28sqrt%282%29%29sin%28x%29=0
2-2%281-sin%5E2%28x%29%29-%28sqrt%282%29%29sin%28x%29=0
2-2%2B2sin%5E2%28x%29-sqrt%282%29sin%28x%29=0
2sin%5E2%28x%29-sqrt%282%29sin%28x%29=0
sin%28x%29%282sin%28x%29-sqrt%282%29%29=0
Two solutions,
sin%28x%29=0
x=0 and x=180
.
.
.
2sin%28x%29-sqrt%282%29=0
sin%28x%29=sqrt%282%29%2F2
x=45 and x=135