Trigonometry! #124

Geometry Level 3

In \(\Delta ABC\), \(s\) represents the semiperimeter and \(r_{1}\) represents the radius of the excircle opposite to \(A\). If \(3s^{2}=r_{1}^{2}\), then enter the degree measure of \(\angle A\).

This problem is part of the set Trigonometry.

×

Problem Loading...

Note Loading...

Set Loading...