The lengths of segments $PQ$ and $PR$ are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. Find the length of the angle bisector of angle R.

Through the Law of Sines I was able to find that the angle measure of R is approximately ${81.787}^{\circ}$ and from the Law of Cosines I figublack out that the measure of side $QR$ is 7 inches.

I am unsure of what steps I should take to find the measure of the angle bisector. Any help will be greatly appreciated!

Through the Law of Sines I was able to find that the angle measure of R is approximately ${81.787}^{\circ}$ and from the Law of Cosines I figublack out that the measure of side $QR$ is 7 inches.

I am unsure of what steps I should take to find the measure of the angle bisector. Any help will be greatly appreciated!