SOLUTION: write the expression in terms of sine only
3sin(piX)+3sqrt3cos(piX)
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Question 979237: write the expression in terms of sine only
3sin(piX)+3sqrt3cos(piX)
Answer by ikleyn(52797) (Show Source): You can put this solution on YOUR website!
+ = . = . = . = ..
We used here the addition formula for sines
=
of Trigonometry (see, for example, the lesson Addition and subtraction formulas in this site), and the facts that
= cos(30°) = and = sin(30°) = .
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