Question

Hey mates plz help me to find x° and plz ignore that line drawn by me..​

Answer 1

Answer:

∠x = 40°

Step-by-step explanation:

Given : ∠ A = 40°, ∠ACB = 90°, ∠DEB = 100°

To find : ∠D = x

In Δ ABC,

∠A + ∠ACB + ∠B = 180........Sum of angles of a triangles is 180

40° + 100° + ∠B = 180

140° + ∠B = 180

∠B = 180 - 140

∠B = 40

In ΔBED,

∠B + ∠BED + ∠D = 180...........Sum of angles of a triangle is 180°

40° + 100° + ∠x = 180

140 + ∠x = 180

∠x = 180 - 140

∠x = 40