SOLUTION: let sinx=4/5 where x is in quadrant ii. find (2x)

SOLUTION: let sinx=4/5 where x is in quadrant ii. find (2x)

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Question 768055: let sinx=4/5 where x is in quadrant ii. find (2x)

Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Quadrant 2, the actual angle is .
gives the reference angle from 0 to pi. You would want first,
and then you are looking for , so
.

Approximately 253.7 degrees.
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