Answer:
14 degrees
Step-by-step explanation:
12 + 25 - 23 = 14
#1
Divide into two rectangles


#2

#3

7π/12 lies in the second quadrant, so we expect cos(7π/12) to be negative.
Recall that

which tells us

Now,

and so

It will be: D
-3 x -5/2 = 15/2, which is 7 1/2