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# Pre-Calc help!

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Find the smallest positive solution to the equation sin(x)= cos (2x+pi/3)

Thank you!

Nov 9, 2020

#1
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All you need to know is that

$$Sin(x)=cos(\frac{\pi}{2}-x)$$

If you think about any right-angle triangle you will see that this is true

(at least you will see it is true for acute angles).

Nov 9, 2020
#3
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oh wait im an idiot. I completely forgot about that, thanks for your help

doorknoob  Nov 10, 2020