Question

What is the measure of AC?
А. 299
В. 122
с. 58
D. 116°

Answer 1

○ D. 116°

Explanation:

Think of the Unit Circle. You know that half of 360° is 180°, and that angle has a measure of 58°, so you do this:

-58° + 180° = 122°

Now, that chord of the circle drags it a bit by a few units, so that will be approximately 116°.

*This may not be the best explanation I can give, but I gave one.

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