SOLUTION: If 0 is less than/equal to x less than/equal to 360 What are all values of x for cos^2x-1=0

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Question 754838: If 0 is less than/equal to x less than/equal to 360
What are all values of x for cos^2x-1=0
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
If 0 is less than/equal to x less than/equal to 360
What are all values of x for cos^2x-1=0
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cos^2x-1=0
cos^2x=1
cosx=±√1
cosx=±1
cosx=1
x=0
or
cosx=-1
x=180º