If an angle is in the second quadrant and the reference angle is 25 degrees, find the angle?

How in the world do I do this? Please help anyone! THANKS!

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- June 21st 2005, 12:58 PMTiffychopFinding an angle?
If an angle is in the second quadrant and the reference angle is 25 degrees, find the angle?

How in the world do I do this? Please help anyone! THANKS! - June 22nd 2005, 02:33 AMticbol
A reference angle is an acute angle---that is less than 90 degrees---measured from the x-axis.

So if the reference angle is 25 degrees and the angle in question is in the 2nd quadrant, then from the x-axis in the 2nd quadrant we go up 25 degrees. And the angle in question is:

180 -25 = 155 degrees ------answer.