144k views
10 votes
Please answer question b math help ( please show work )

Please answer question b math help ( please show work )-example-1
User Neurino
by
4.1k points

1 Answer

1 vote

Answer:

a = 10.9

b = 10.4

Explanation:

part a: use sine

⇒ sine =
(opposite)/(hypotenuse)

⇒ sine 23 =
(y)/(28)

(sine 23 = 0.39)

⇒ 0.39 =
(y)/(28)

multiply each side by 28

⇒ 0.39 x 28 =
(y)/(28) x 28

⇒ 10.9

part b: use cosine

⇒ cos =
(adjacent)/(hypotenuse)

⇒ cos 29 =
(y)/(12)

(cos 29 = 0.87)

⇒ 0.87 =
(y)/(12)

multiply 12 on both sides

⇒ 0.87 x 12 =
(y)/(12) x 12

⇒ 10.4

User Dappawit
by
4.3k points