Question

in angle ABC BC=ABand angle ABC =100 degree find angle BAC​

Answer 1

Answer:

the answer will be 40 degree.

Step-by-step explanation:

abc = 100 triangle =180 = 100 +?+?

Answer 2

Yo!

Here's your answer!!

Given:-

In triangle ABC, AB= BC and angle ABC= 100°

To find:- angle BAC

Now,if AB= BC,

then angle BAC = angle BCA

According to sum of angles of a triangle rule;

angle ABC+angle BAC + angle BCA = 180°

100°+ 2 × angle BAC = 180°

2 × angle BAC = 180°-100°

angle BAC= 80°/ 2

angle BAC= 40°= angle BCA

Hence angle BAC is 40°

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