Answer:
n * r ^2
Step-by-step explanation:
the marked angles are complementary → B
All 3 triangles are right with one angle = 90°
the sum of the angles in a triangle = 180°
thus the remaining 2 marked angles sum to 90°, thus are complementary
Answer:
D
Step-by-step explanation:
Answer:
-9 1/4
Step-by-step explanation:
