Question

Find the value of x. Round your answer to the nearest tenth.

A.) 12.5
B.) 10
C.) 13
D.) 9.7

Answer 1

The value of x "option A) 12.5" is required answer.

Explanation:

In given figure,

Base (b) = 11 and Angle = 28°

To find, the value of x = ?

We know that,

`\cos A=(b)/(h)`

Where, h is the hypotaneous = x

⇒
`\cos 28=(11)/(x)`

⇒
`x=(11)/(\cos 28)`

The value of
`\cos 28` = 0.8829

⇒ x =
`(11)/(0.8829)`

⇒ x = 12.458

⇒ x ≈ 12.5

∴ The value of x ≈ 12.5

Thus, the value of x "option A) 12.5" is required answer.