Question

X 39° Find the value of x to the nearest tenth.

Answer 1

For this case we have a right triangle

The angle given is 39º

The adjacent side = 7

And we want to find the value of the hypothenuse x, we can use the following identity:

`\text{cos}39=(7)/(x)`

Solving for x we have:

`x=(7)/(\cos 39)=9.007`

The answer rounded to the nearest tenth would be:

9.0