Question

In angle ABC B= ९०° , A=30° , AC = 14.Find AB and BC.​

Answer 1

Here in triangle A B C

B = 90° , A = 30°

A + B + C = 180°

30 + 90 + C = 180°

C = 180 - 120

C = 60°

By 30°-60°-180°

BC = 1/2 x AC ---( side opposite to 30°)

BC = 1/2 x 20

BC = 10cm

AB = √3/2 x AC ---( side opposite to 60°)

AB = √3/2 x 20

AB = 10√3