The answer for the above posted problem is 48°
Step-by-step explanation:
Here we will apply angle sum property of triangle, i.e, the sum of three angles of the triangle is 180°.
Given:
ABC is right angle triangle.
Solution:
so ∠C = 90° ( from given figure)
∠A =42° (given)
∠A + ∠B + ∠C = 180°
or, 42° + ∠B + 90° = 180°
or, ∠B = 180° - (90° + 42°)
= 48°
so ∠B = 48°
Thus we can conclude that ∠B = 48°
