Question

in a triangle ABC angle A =60 degree angle C =40 degree find angle B
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Answer 1

Answer:

GIVEN A TRIANGLE ABC

ANGLE A IS 60°

ANGLE C IS 40°

ANGLE B IS ?

ACCORDING TO QUESTION

BY USING ANGLE SUM PROPERTY

ANGLE 1+2+3 = 180°

60+40+B = 180°

100+B = 180°

B = 180-100

= 80°

Answer 2

Answer:

In ∆ABC,

A=60°

C=40°

A+B+C=180 (ANGLE SUM PROP OF ∆)

60+40+B=180°

100+B=180°

B=180-100°

B=80°

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