Question

in triangle ABC , if angle A=120 and AB=AC. Find angle B and Angle C​

Answer 1

Step-by-step explanation:

This ΔABC is an isosceles triangle. In this kind of triangle, two of the sides are equal.

So if AB=AC,

Then vertex= angle A and

Base angles= angle B and angle C which are equal.

Let the base angles angle B and angle C be x.

Since the sum of the angles of a triangle=180°,

Therefore,

angle A + angle B + angle C = 180°

= 120° + x+x= 180°

= 120° + 2x= 180°

= 2x = 180°-120°

= 2x = 60°

= x = 60°/2 =30°

Therefore,

Angle A= 120°

Angle B= 30°

Angle C= 30°

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Answer 2

Answer:

wrong question

first give the value of of any one angle