Question

in triangle abc , ab=ac and angle b =50 degree. then find angle a is equal to

Answer 1

Answer:

given AB=AC,LB=50°

Step-by-step explanation:

since,AB=AC

LB=LC=50°(angles opposite to equal sides are equal)

Answer 2

Given: in triangle abc , ab=ac and angle b =50 degree.

To find: The angle a.

Solution:

According to the question, the given triangle is isosceles. So, the angles formed between the equal sides and the unequal side must be the same. This means that if angle ∠B is 50° then angle ∠C will also be 50°.

Besides, the sum of all angles of a triangle is 180. Let the angle ∠A be equal to x. Now, the following equation can be written and the value of x can be found.

$50 + 50 + x = 180$

$x = 80$

Therefore, angle A is 80°.

Although a figure of your question is missing, you might be referring to the one attached.