SOLUTION: Replace X with 30degrees and then simplify -3sin 2x as much as possible.
Algebra.Com
Question 513947: Replace X with 30degrees and then simplify -3sin 2x as much as possible.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Look at the unit circle. The sin of an angle is the 
-coordinate of the corresponding point on the circle.
John
My calculator said it, I believe it, that settles it
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