Question

plzzz tell me how can we solve this​

Answer 1

In △ABC,

∠A=∠B+∠C

Now, sum of angles = 180

∠A+∠B+∠C=180

∠A+∠A=180

∠A=90∘

Thus, △ABC, is a right angled triangle.

Answer 2

Answer:

let ABC is triangle.

let <A = <B + <C

Angle Sum Property of triangle

<A + <B + <C = 180°

<A + <A = 180°

2<A = 180°

<A = 180°/2

<A = 90°

hence, ABC is a right triangle with <A = 90°.