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OpenStudy (4meisu):
Give the principal angles you would use to find all solutions to sin(2x)=2/5 with 0
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OpenStudy (4meisu):
This is my working so far: 2x=sin^-1(2/5) 2x=23.58 x=11.79 Then I got these angles: 168.21, 528.21, 371.79 Am I correct?
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