Question

In a ABC A + B = 125 and B + C = 150Find all the
angle of ABC
​

Answer 1

Answer:

A + B = 125 , B + C = 150

A+B+C = 180⁰( angle sum property of triangle)

125⁰+C = 180⁰

C = 180⁰-125⁰

C = 55⁰

B + C = 150⁰

B+55⁰=150⁰

B = 150⁰-55⁰

B = 95⁰

A + B = 125⁰

A+95⁰ = 125⁰

A = 125⁰-95⁰

A = 35⁰

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Answer 2

<A+B=125

=A=125-B

<B+C=150

=C=150-B

WE KNOW THAT THE ANGLES OF TRIANGLE =180°

A+B+C=180°

(125-B)+B+(150-B)=180°

125- B+B+150-B=180°

275-B=180°

-B=180-275

-B=-95

THEN B =95

A=125-95

A=30

C=150-B

C=150-95

C=55

HENCE,A=30,B=95,C=55