Question

Find x and round to the nearest tenth

Answer 1

Answer and Step-by-step explanation:

22ft = x (c)

20ft = y (b)

18ft = z (a)

Plug into equation.

`22^(2) = 20^(2) + 18^(2) - 2(20)(18)cosC (X)\\\\484 = 724 - 720cosC\\\\-240 = -720cosC\\\\(1)/(3) = cosC\\\\cosx^(1) ((1)/(3) ) = C\\\\C = 70.5288\\\\`

C ≈ 70.5 is the answer.