SOLUTION: Solve for x in [0,2pi]: cos x - sin x = -1

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Question 677926: Solve for x in [0,2pi]:
cos x - sin x = -1
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for x in [0,2pi]:
cos x - sin x = -1
square both sides
cos^2x-2sinxcosx+sin^2x=1
-sin(2x)+1=1
-sin(2x)=0
2x=0,π
x=0, π/2