Question

What is the value of cos A?

Answer 1

The answer to your question is cos A =
`(3)/(5)`

Explanation:

Process

1.- Write the formula

`cos A = (adjacent side)/(hypotenuse)`

2.- Identify the legs of the triangle

opposite side = 12

adjacent side = 9

hypotenuse = 15

3.- Substitute the values in the formula

`cos A = (9)/(15)`

4.- Simplification and result

`cos A = (3)/(5)`