Question

In fig.2, if ∠ABC = 70°, ∠BCA = 60°, then find ∠CDB.​

Answer 1

Answer:

if ∠ABC = 70°, ∠BCA = 60°, then ∠CDB=50°

Answer 2

Angle CDB=50°

Step-by-step explanation:

In ∆ABC,By Angle sum property

Angle ACB +AngleABC +Angle BAC=180°

60°+70°+Angle BAC=180°

Therefore,Angle BAC=50°

Hence,By therom Angle on the same segment are equal.

Angle BAC=Angle CDB=50°