Calculating angle when sine is known

How can I calculate the angle in degrees wh开发者_如何转开发en Math.Sin is known? Asine will work? and multiply it by 180 and divide by pi?

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Yes, but remember that 135 degrees has the same value for Sin(ang) as 45 degrees does. So your answer is not unique.

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That is correct.

For more information, read this : http://www.teacherschoice.com.au/maths_library/angles/angles.htm