Question

In the given figure angel ABC=69°, angel ACB=31°. Find angel BDC​

Answer 1

Answer:

80 degrees

Step-by-step explanation:

abc+acb+bdc=280

69+31+×=180

100+×=180

×=80

Answer 2

Step-by-step explanation:

In triangle ABC

angle BAC + ABC +ACB = 180°

angle BAC + 69 + 31 = 180

angle BAC + 100 = 180

angle BAC = 180- 100

angle BAC = 80°

for segment BADCB

angle BAC = BDC

( angle in the same segment are equal)

angle BDC= 80°