Question

1. In a AABC, if 2 ZA = 3 ZB = 6 ZC, then ZB = ?
(a) 30°
(b) 90°
(c) 60°​

Answer 1

60

this ans is 60 because 2 * ( 6-3) * 10.

I hope u know this concept

Answer 2

Answer:

90° is correct

Step-by-step explanation:

Given,

In a traingle, 2 ∠A = 3∠B = 6∠C .

let 2∠A = 3∠B = 6∠C = k (say)

then, ∠A = k/2 , ∠B = k/3 and ∠C = k/6

We know,

Sum of angles of triangle = 180°

k / 2 + k / 3 + k / 6 = 180

(3k + 2k + k) / 6 = 180

6k / 6 = 180

k = 180°

Then, ∠A = k / 2 = 180 / 2 = 90°

and, ∠B = k / 3 = 180 / 3 = 60°

and, ∠C = k / 6 = 180 / 6 = 30°

Hence, Option b) 90° is correct.