Tangent always meets radius at 90° angle.
Angle ABC = 90° so Pythagoras' theorem applies.
r² + 4² = (r+2)²
r² + 16 = r² + 4r + 4
12 = 4r
r = 3
Answer:
x = 37
Step-by-step explanation:
by using vertically opp angles
2x + 1 = 75

Answer:
Look below
Step-by-step explanation:
Answer:
57
Step-by-step explanation:
use a calculator lol