Question

Find the unknown angle and give reason ​

Answer 1

This is the solution...

Answer 2

Step-by-step explanation:

Join BD such that it's a straight line!

Then angle ABD and angle CDB r 90

Name the intersection of Line from B and D as O. Then, angle OBD = 90-50 =40

Similarly... angle OBD equals 30

In triangle OBD, sum of all the angles equal 180. Then, angle OBD + angle BDC + angle x = 180

40 + 30 + x = 180

70 + x = 180

x = 180 - 70

x = 110