Question

Can someone help me with this question? Thank you!

Answer 1

122°

Explanation:

The Angle Sum Property of a triangle gives that the sum of the internal angles of a triangle is equal to 180°.

Hence,

⇒ ∠A + ∠B + ∠C = 180°

⇒ ∠A + 43° + 15° = 180°

⇒ ∠A + 58° = 180°

⇒ ∠A = 122°

Answer 2

122°

Explanation:

triangle = 180°

∴180 - 43 - 15

=122°