Question

In ΔSTU, u = 84 inches, s = 13 inches and ∠T=165°. Find the length of t, to the nearest inch.

Answer 1

Answer:

97

Step-by-step explanation:

I used the law of cosines:  $t^{2} =s^{2} +u^{2} -2tu cos (t)$

Let plug the numbers in :  t^2=$13^{2} +84^{2} -2(13)(84)cos (165)$ which approx is 97 to the nearest inch.