Answer:
Step-by-step explanation:
You need JL. Use the Pythagorean Theorem to get it.
a^2 + b^2 = c^2
a = 9
b = 40
c = ?
9^2 + 40^2 = c^2
c^2 = 1681
sqrt(c^2) = sqrt(1681)
c = 41
Cos(j) = adjacent / hypotenuse
adjacent = 9
hypotenuse = 41
Cos(J) = 9 / 41
