Suppose angles 3 and 4 are complementary and $\angle 3 = 53 ^ { \circ }$ . Then ?4 = _____°.
A) $37 ^ { \circ }$
B) $52 ^ { \circ }$
C) $74 ^ { \circ }$
D) $47 ^ { \circ }$
E) $42 ^ { \circ }$

Question

Suppose angles 3 and 4 are complementary and $\angle 3 = 53 ^ { \circ }$ . Then ?4 =  _____°.
A) $37 ^ { \circ }$
B) $52 ^ { \circ }$
C) $74 ^ { \circ }$
D) $47 ^ { \circ }$
E) $42 ^ { \circ }$

Quizplus · Accepted Answer

Complementary angles add up to 90°. If ∠3 is 53°, then:

∠3 + ∠4 = 90°
53° + ∠4 = 90°
∠4 = 90° - 53°
∠4 = 37°

Therefore, the answer is A) 37°.

Suppose Angles 3 and 4 Are Complementary And ∠3=53∘\angle 3 = 53 ^ { \circ }∠3=53∘

Suppose Angles 3 and 4 Are Complementary And $\angle 3 = 53 ^ { \circ }$