SOLUTION: Find all values of x such that sin 2x = sin x and 0 is less than or equal to x which is less than or equal to 2 pi.

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Question 640256: Find all values of x such that sin 2x = sin x and 0 is less than or equal to x which is less than or equal to 2 pi.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Use the double angle formula:



Multiply both sides by





Use the unit circle to find the two values of that result in in the specified interval (once around the circle). Remember, is the coordinate of the point of intersection of the terminal ray and the unit circle.



John

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