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Gwar [14]
3 years ago
7

In the below figure angle abc is 69 degree, angle acb is 31 degree so find the angle bdc

Mathematics
1 answer:
olchik [2.2K]3 years ago
4 0

Answer:

\angle BDC=80^{\circ}

Step-by-step explanation:

We are given that

\angle ABC=69^{\circ}

\angle ACB=31^{\circ}

We have to find the angle BDC.

In triangle ABC

Sum of interior angles of triangle=180 degrees

\angle ABC+\angle ACB+\angle BAC=180^{\circ}

69+31+\angle BAC=180

100+\angle BAC=180

\angle BAC=180-100

\angle BAC=80^{\circ}

\angle BAC=\angle BDC=80{\circ}

Angles subtended on the same are ac are equal.

\angle BDC=80^{\circ}

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