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Yousef R.

asked • 07/10/18

Math help please

Find the solutions of sin 2θ = sin θ if 0° ≤ θ < 90°.

1 Expert Answer

By:

Arturo O. answered • 07/10/18

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Yousef R.

a) 60°, 120°           c) 30°,120°
b) 30°, 60°             d) 0°, 60
 
So (d) is the answer?
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07/10/18

Arturo O.

Over the given interval, yes.  But test the answer. 
 
Is sin2θ = sinθ ?
 
Test this for both 0° and 60°.
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07/10/18

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