The user-friendly version of this content is available here.
The following content is copyright (c) 2009-2013 by Goods of the Mind, LLC.
This problem trains for: SAT-I, AMC-8, GMAT.
In a scalene triangle the angles A, B, C satisfy:
What is the measure (in degrees of arc) of the angle C?
Since the angles of a plane triangle add up to 180°:
In order to solve for C, we eliminate all the other unknowns (writing A and B in terms of C) :