Question

In triangle abc angle a =110 and ab=ac find angle ab

Answer 1

Answer:

35°

Step-by-step explanation:

ABC=180°

angle A=110°

AB=AC

AB=q

180°-110°=70°

70°÷2=35°

. ' . AB=35

Answer 2

As AB=AC hence ∠B=∠C (Equal sides AB=AC have equal opposite angles)

Using theorem, Sum of interior angles of a triangle is 180⁰

Therefore ∠A+∠B+∠C=180⁰

⇒110⁰ +2∠B=180⁰ [GIven ∠A=110⁰]

⇒∠B=35⁰

Hence, ∠B=∠C=35⁰