Question

In the following figure, triangle ABC is a right triangle, and m ZA = 42°. Find the value

to scale.
a0

Answer 1

triangle ABC is a right triangle, and m ZA = 42°. Find the value

to scale.

a0

Explanation:

As n is exterior angle ,

<A + 90 = n

∠a = 132°

As we know that exterior angle = Sum of opposite interior angles

→ ∠A + ∠B = ∠n

∵ ∠42° + ∠90° = ∠n

∴ ∠n = 132°