Question

if angle ABC=70 degree, angle BCA=60 degree, then find angle CDB

Answer 1

ABC = 70 °
BCA = 60 °
as we know that
in a triangle
the sum of angles is 180°
so
let CDB be x
70 + 60 + CDB = 180
130 + CDB = 180
CDB = 180 - 130
= 50°

Answer 2

The required angle ∠CAB=50°

Step-by-step explanation:

To Find

The ∠CDB of the triangle ΔABC.

Theory Used

The sum of all the three angles of the triangle is 180°.

Given

∠ABC=70° and ∠BCA=60°.

We know that in a triangle there are three angles and the sum of all the three angles is 180°.

So, we have

∠ABC+∠BCA+∠CAB=  180°

Putting the values of the given angles we have,

  70°+60°+∠CAB=180°

on adding the angles,

        130°+∠CAB=180°

taking 130° to the right-hand side,

                 ∠CAB=180°-130°

on solving we have,

                ∠CAB=50°

  Therefore, the required angle is 50°.

[YOUR QUESTION IS IMPROPER BUT MOST PROBABLY YOUR QUESTION WAS-

If angle ABC=70 degree, angle BCA=60 degree of triangle ABC then find angle CAB.]