In AABC, AB = AC and ZB = 45°. Then, ZA is
(1) 45
(2) 60°
(3) 90°
(4) 75°
Answers
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2
Answer:
3)90⁰
Step-by-step explanation:
In ∆ ABC,
AB=AC
therefore,angle B= angle C =45⁰[isosceles ∆]
angleA+angleB+angleC=180⁰
angleA=180⁰-angleB-angleC
=180⁰-45⁰-45⁰
=180⁰-90⁰
=90⁰
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