Question

Write your answer in simplest radical form​

Answer 1

Answer:

a = 4$\sqrt{3}$

Step-by-step explanation:

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

cos60° = $\frac{1}{2}$ , then

cos60° = $\frac{adjacent}{hypotenuse}$ = $\frac{2\sqrt{3} }{a}$ = $\frac{1}{2}$ ( cross- multiply )

a = 4$\sqrt{3}$