Please answer questions math help ( please show work)

a) n = 1.8

b) n = 12

Step-by-step explanation:

use cosine for both ⇔ cos =

part a:

⇒ cos 75 =

cos of 75 is 0.2588

⇒ 0.2588 =  

multiply 7 on both sides

⇒ 0.2588 x 7 =   x  

⇒ n = 1.8

part b:

⇒ cos 57 =

cos of 57 is 0.5446

⇒ 0.5446 =

multiply 22 on both sides

⇒ 0.5446 x 22 = x 22

⇒ n = 12

answer: an 8-foot rope is tied from the top of a pole to a

stake in the ground, as shown in the diagram

below

step-by-step explanation:

4+4+2x

or

2x+8

step-by-step explanation: