Answer:
69 degrees
Step-by-step explanation:
yeah
D = 390mi
r = 60 mi/h
390/60 = 6.5
(t) = 6.5 h
This graph shows the solution on a Cartesian plane.
Likely your graph is a solution on a number line. It will have an open circle at x=2, and an arrow pointing to the left from that point.
Assuming that the side of the triangle marked 13.5 is tangent to the circle, the there's a right angle where the radius meets the tangent segment. The triangle is then a right triangle and the Pythagorean Theorem applies.