Find the value of each variable 13-17

Step-by-step explanation:

Question 13.

By applying cosine rule,

cos(45°) =

y = 10√2

By applying sine rule,

sin(45°) =

x = 10

Question 15.

By applying sine rule,

sin(60°) =

y = 16√3

By applying cosine rule,

cos(60°) =

x = 16

Question 17.

By applying sine rule,

sin(60°) =

y = 22

By applying cosine rule,

cos(60°) =

x = 11

215.92 dollars is the answer