Question

Q5) In a ∆ABC, if ∠A− ∠B = 42 , and ∠B− ∠C= 21 then ∠B = ?

(a) 32 (b) 63 (c) 53(d) 95​

Answer 1

sum of angles of a triangle is 180°

a - b = 42

a = 42+ b

b - c = 21

c = b - 21

and a + b + c = 180

42+b+ b + b - 21 = 180

3b + 21 = 180

3b = 159

b = 53

HOPE THIS HELPS PLEASE MARK AS BRAINLIEST AND FOLLOW ME

Answer 2

Answer:

answer is 54° please mark it as brainliest