A = (45/360)×16^2×pi
A = 32pi
-5+-12 is -17
For lack of a better metaphor, it's like digging a pit deeper than it already is.
Formula used: cos(x) = 
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
It's the second answer down : Angle B, A and C
Step-by-step explanation: