Question

3. In Fig. 10.15, find the value of x.
B
80
2.
3x
С
D
A
Fig. 10.15​

Answer 1

Answer:

X=40

Step-by-step explanation:

ANGLE BCA=180-3x

angle BAC+ABC+BCA=180

BY ANGLE SUM PROPERTY.

180-3X+80+X=180

80-2X=0

X=40

Answer 2

Answer:

40°

Step-by-step explanation:

3x = 80°+x

2x = 80°

x = 40°

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