Question

Special right triangles

Answer 1

Answer:

c

Step-by-step explanation:

Answer 2

Answer:

D

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos30° = $\frac{\sqrt{3} }{2}$ , then

cos30° = $\frac{adjacent}{hypotenuse}$ = $\frac{AY}{RY}$ = $\frac{AY}{48}$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

2AY = 48$\sqrt{3}$ ( divide both sides by 2 )

AY = 24$\sqrt{3}$ → D