Question

30 20 Y Find x Can someone please help me

Answer 1

Answer:

B

Step-by-step explanation:

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

cos30° = $\frac{\sqrt{3} }{2}$ , then

cos30° = $\frac{adjacent}{hypotenuse}$ = $\frac{x}{20}$ = $\frac{\sqrt{3} }{2}$ ( cross- multiply )

2x = 20$\sqrt{3}$ ( divide both sides by 2 )

x = 10$\sqrt{3}$ → B