Question

Please Solve This Question​

Answer 1

Answer:

angle ADB = 80 degree (given)

angle DCB = 50 degree (given)

angle ADB + angle CDA = 180 (Linear pair)

80 + angle CDA = 180

therefore , angle CDA = 100 degree

Now , according to angle sum property of a triangle , all the angles of a triangle sum of to 180 degree.

In triangle BDC ,

angle CDA + angle DCB + angle DBC =180

100 + 50 + angle DBC = 180

angle DBC = 30 degree

therefore , angle DBC = x = 30 degree(Ans)

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