Divide those two numbers and you're answer should be within them.
1. Radius is half of the diameter so d = 2r
2. Circumference = 2pir OR pid. But the perimeter of a polygon, you just add the sides
Your answers are
A = 35.7°
B = 67.6°
C = 76.7°
cosine law
A = 35.723697
sine law for the rest of the angles
B = 67.58886795
All angles in triangle sum to 180 so find C with that
A + B + C = 180
C = 180 - A - B
C = 180 - 35.723697 - 67.58886795
C = 76.7°
Answer:
Step-by-step explanation:
C