The value of theta for which sin 3theta = cos (theta - 6°) is ......
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The value of theta is 21 degrees
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answer :- theta = 24°
explanation-
sin 3@=cos(@-6°)
sin3@=sin (90-@+6) [cos(90-@)=sin@]
3@=90+6-@ [ sin cancelled]
4@=96
@=24 @=theta
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