Question

Please answer question b math help ( please show work )

Answer 1

Answer:

a = 10.9

b = 10.4

Step-by-step explanation:

part a: use sine

⇒ sine = $\frac{opposite}{hypotenuse}$

⇒ sine 23 = $\frac{y}{28}$

(sine 23 = 0.39)

⇒ 0.39 = $\frac{y}{28}$

multiply each side by 28

⇒ 0.39 x 28 = $\frac{y}{28}$ x 28

⇒ 10.9

part b: use cosine

⇒ cos = $\frac{adjacent}{hypotenuse}$

⇒ cos 29 = $\frac{y}{12}$

(cos 29 = 0.87)

⇒ 0.87 = $\frac{y}{12}$

multiply 12 on both sides

⇒ 0.87 x 12 = $\frac{y}{12}$ x 12

⇒ 10.4