Example 2: Solving a Trig Equation with a Multiple Angle

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This tutorial solves 5sin(3x) = 2.
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This solution is incomplete.  With the (3x) involved it will make the period of your function 2pi/3...essentially 3 full cycles over the interval of [0, 2pi).  This video only shows 2 out of 6 possible answers.  One would need to repeat the cyclic pattern over the next two cycles to find all of the answers.

m.tokarz