Question

Need help again ?!???

Answer 1

11.47

Explanation:

Use SohCahToa. In this problem, you are given the hypotenuse and you are trying to solve for the adjacent side so it will be cosine. (cosine =
`(adjacent)/(hypotenuse)`)

1. set up the equation

cos55 =
`(x)/(20)`

2. Multiply both sides by 20 to solve for x

20 · cos55 = 11.47

Answer 2

11.47

Solution,

From the figure,

`cos \: 55 = (</strong><strong>PQ</strong><strong>)/(</strong><strong>PR</strong><strong>)`

`cos \: 55 = (</strong><strong>PQ</strong><strong>)/(20)`

`</strong><strong>PQ</strong><strong> = 20 \: cos \: 55`

`</strong><strong>PQ</strong><strong>= 11.472`

`</strong><strong>PQ</strong><strong>= 11 .47`

Hope this helps...

Good luck on your assignment...