If you follow the order of pemdas the answer would be (-24)
7, 14 would be it but you have to divide the whole equation by 2 to get the y alone
The area of a circle in terms of the circle's radius

is

Differentiating both sides with respect to

, you get
Answer:
12/13
Step-by-step explanation:
We know that cosine is the adjacent side divided by the hypotenuse in a right triangle.
The adjacent side to angle C is BC
The hypotenuse is AC because it is opposite to the right angle
So...
cosine is (BC)/(AC)
36/39
12/13