Question

Determine the value of x using a trigonometric
ratio.

Answer 1

B. 8.56

Step-by-step explanation:

Given:

• angle = 50°

• adjacent = 5.5

• hypotenuse = x

So using cosine rule:

`\sf cos(x) = (adjacent)/(hypotenuse)`

`\rightarrow \sf cos(50) = (5.5)/(x)`

`\rightarrow \sf x= (5.5)/(cos(50) )`

`\rightarrow \sf x= 8.56`