Question

Find the exact value of cos A in simplest radical form.

Answer 1

`\cos(A) = (2 √(6) )/(7)`

Explanation:

Since we are finding cos A we have

`\cos(A) = (AC)/(AB)`

From the question

AC = √96

AB = 14

Substitute the values into the above formula

That's

`\cos(A) = ( √(96) )/(14)`

We have the final answer as

`\cos(A) = (2 √(6) )/(7)`

Hope this helps you