Question

What is the cosC? Write in fractional form.

25 / 15

20 / 25

25 / 20

15 / 25​

Answer 1

15 / 25

Explanation:

Cos is found by doing adjacent / hypotenuse. For this triangle, the adjacent of C is 15, the opposite is 20, and the hypotenuse is 25. Therefore, cosC = 15/25.