Question

Please answer questions math help ( please show work)

Answer 1

a) n = 1.8

b) n = 12

Explanation:

use cosine for both ⇔ cos =
`(adjacent)/(hypotenuse)`

part a:

⇒ cos 75 =
`(7)/(n)`

cos of 75 is 0.2588

⇒ 0.2588 =
`(7)/(n)`

multiply 7 on both sides

⇒ 0.2588 x 7 =
`(7)/(n)` x

⇒ n = 1.8

part b:

⇒ cos 57 =
`(22)/(n)`

cos of 57 is 0.5446

⇒ 0.5446 =
`(22)/(n)`

multiply 22 on both sides

⇒ 0.5446 x 22 =
`(22)/(n)` x 22

⇒ n = 12