Question

Can you help me with number 20? I am confused with it

Answer 1

Question 20

We have the given triangle

To get x, we will use the trigonometric relation

`\cos \theta=\frac{\text{adjacent}}{\text{hypotenuse}}`

Thus, we will have

`\cos 71^0=(x)/(20)`

To get x, we will cross multiply

`\begin{gathered} x=20\cos 71^0 \\ x=6.511 \end{gathered}`

The value of x is 6.51