Question

If in a triangle abc if side ab=6 ac=12 bc=6 then angle b equals

Answer 1

in triangle ABC AB = 6 AC=12 BC=6

Therefore thr ratio is 1:2:1

let common multiple be

$x$

x + 2x + x = 180 (sum of all angles of triangle)

4x = 180

x = 180÷4

x = 45

Therefore the angles are 45 , 45 ,2×45= 90

means 45, 45 ,90

therefore b = 90