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Home > PC3 > Chapter 1 > Lesson 1.3.3 > Problem 1-134


Using the unit circle below, estimate the radian measure for the angles shown. 

Circle, with vertical & horizontal diameters, and 3 additional radii in first quadrant, labeled, from right to left, A, B, & C, The central angles for each point appears to be as follows: a, a third of the quarter, b, half of the quarter, C, 2 thirds of the quarter.

Review the answer to problem 1-111.