Question

A park maintenance person stands 19 m from a circular monument. If you assume her lines of sight form tangents to the monument and make an angle of 34°, what is the measure of the arc of the monument that her lines of sight intersect?

146, 56, 124, or 112?

Answer 1

Correct answer is A.

$\frac{\alpha}{2}=90^o-17^o=73^o \\ \\ \alpha=146^o$