Answer:
The answer to your question is cos A = [tex]\frac{3}{5}[/tex]
Step-by-step explanation:
Process
1.- Write the formula
[tex]cos A = \frac{adjacent side}{hypotenuse}[/tex]
2.- Identify the legs of the triangle
opposite side = 12
adjacent side = 9
hypotenuse = 15
3.- Substitute the values in the formula
[tex]cos A = \frac{9}{15}[/tex]
4.- Simplification and result
[tex]cos A = \frac{3}{5}[/tex]
