Question

Find the value of x to the nearest tenth.

Answer 1

Answer:

x = 9

Step-by-step explanation:

Given : A triangle with angle 39 degree.

To find : Find the value of x to the nearest tenth.

Solution : We have given

A triangle with angle 39 degree and hypotenuse = x.

Adjacent side = 7 .

Cos(theta) = $\frac{Adjacent}{Hypotenuse}$.

Plug the values

Theta = 39 degree.

Cos(39) = $\frac{7}{x}$.

x = $\frac{0.777}{7}$.

x = 9.09

Nearest tenth is 9.09

Therefore, x = 9

Answer 2

Check the picture below

the angle is in degrees, thus, make sure your calculator is in Degree mode