Question

In a right angled triangle ABC, B=90°, A= 30° and AC=20 cm.. Let us determine the lengths of two sides BC and AB.​

Answer 1

Answer:BC=10 AB=17.32

Step-by-step explanation:

BC

=SIN30=BC/20

=1/2=BC/20=BC=1/2*20=10CM

AB

=ACSQUARE - BC SQUARE=20*20-10*10

=300SQUAREROOT=17.32CM

HOPE IT IS USEFUL

Answer 2

Answer:

AB= 10$\sqrt{3}$ cm

BC= 10 cm

Step-by-step explanation: