Question

Que: In Figure, ∠ABC = 69°, ∠ ACB = 31°, find ∠BDC.​

Answer 1

Answer:

Solution:

As we know, angles in the segment of the circle are equal so,

∠BAC = ∠BDC

Now in the In ΔABC, sum of all the interior angles will be 180°

So, ∠ABC + ∠BAC + ∠ACB = 180°

Now, by putting the values,

∠BAC = 180° – 69° – 31°

So, ∠BAC = 80°

Hope it will be helpful :)

Answer 2

Angle BDC = 80

Explanation:

Angles of the segment in circle is equal.

so,

Angle BAC = angle BDC

Now,

In ∆ABC

Sume of all the interior angles = 180°

So,

Angle BAC = 180-69-31

=80