SOLUTION: (cos^2(x)=-cos(x) solve for all values of x in the interval 0 degrees is less than or equal to x less than or equal to 360 degrees please.

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Question 606881: (cos^2(x)=-cos(x) solve for all values of x in the interval 0 degrees is less than or equal to x less than or equal to 360 degrees please.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




on



Put the quadratic into standard form:



Factor:



Hence



or



Use the unit circle to find the points where the -coordinate is equal to either 0 or -1 on the specified interval (namely, once around the circle).



John

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