Question

In a triangle ABC, if <A - <B=33 degree and <B - <C=18 degree,then <B= ?

A) 45 degree

B) 35 degree

C) 55 degree

D) 180 degree

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Answer 1

Answer:

Answer:Sum of all angles of a triangle is 180°.

Answer:Sum of all angles of a triangle is 180°./A – /B = 33 (given)

Answer:Sum of all angles of a triangle is 180°./A – /B = 33 (given)/B – /C = 18 (given)

Answer:Sum of all angles of a triangle is 180°./A – /B = 33 (given)/B – /C = 18 (given)To find,

Answer:Sum of all angles of a triangle is 180°./A – /B = 33 (given)/B – /C = 18 (given)To find,/B = ??

Answer:Sum of all angles of a triangle is 180°./A – /B = 33 (given)/B – /C = 18 (given)To find,/B = ??step 1:

Answer:Sum of all angles of a triangle is 180°./A – /B = 33 (given)/B – /C = 18 (given)To find,/B = ??step 1:/A = 33 + /B ➜ equation 1

Answer:Sum of all angles of a triangle is 180°./A – /B = 33 (given)/B – /C = 18 (given)To find,/B = ??step 1:/A = 33 + /B ➜ equation 1/C = 18 + /B ➜ equation 2

➜ equation 2step 2:

➜ equation 2step 2:/A + /B + /C = 180°

+ /C = 180°☞ 33 + /B + /B + /B – 18 = 180°

18 = 180°☞ 3/B = 180 – 33 + 18°

18°☞ 3/B = 180 – 15°

☞ 3/B = 165°

☞ /B = 165/3°

☞ /B = 55°

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