Question

Please help............

Answer 1

x = 8.4

Explanation:

In a right triangle, an angle, the length of its adjacent side and the length of the hypotenuse can be related by the cosine.

In this question:

Angle of 40º.

Adjacent side of x, hypotenuse of 11. So

`cos(40) = (x)/(11)`

Using a calculator, we have that
`cos(40) = 0.766`. So

`x = 11*0.766 = 8.4`

The answer is x = 8.4