explain how you solved it pls

49.46

Step-by-step explanation:

Recall SOH CAH TOA

Here we have the adjacent side and the hypotonouse which means we'll use CAH

which means that

(let x=angle)

cosx=13/20

x=cos⁻¹*13/20

x=49.46

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).