3 years ago

Special right triangles

Mathematics

2 answers:

fiasKO [112]3 years ago

8 0

Answer:

Step-by-step explanation:

Anarel [89]3 years ago

6 0

Answer:

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

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