ABCDEDJGHIKLMNOP
sorry just wanted to see if the bold thing works
Answer:
cos(C)
Step-by-step explanation:
Recall that the sine ratio is opposite over hypotenuse.

Also the cosine ratio is adjacent over hypotenuse.

The tangent ratio does not come close because it doesn't involve the Hypotenuse.

The different between n and 15 is 5 in an algebraic expression would be n-16=5
the solution would be n=21
it's c negative numbers are smaller