Answer: The m∠A is 55° and m∠B is 35°. Hope this helps
Step-by-step explanation:
Step 1: m∠A + m∠B = 90°
Step 2: m∠A + (m∠A − 20°) = 90°
Step 3: m∠A + (m∠A − 20°) = 90°
+20° = +20° Add 20° to both sides.
m∠A + m∠A = 110°
2(m∠A) = 110° Divide both sides by 2.
m∠A = 55°
Step 4: m∠A + m∠B = 90°
55° + m∠B = 90° Substitute 55° for m∠A.
m∠B = 35°
