Find the cosine of ∠I. Write your answer in simplified, rationalized form. Do not round.
cos (I) =

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?