Question

find the value of abc , bc = 20cm and ac= 30cm​

Answer 1

Answer:

Let a = b = 20cm

Let angle ¶ = 30°

The area of the triangle is given by the formula :

Area = 1/2 * (a•b•sin¶)

=> Area = 1/2 * (20*20*sin30°)

= 200sin30° = 200 * 0.5 = 100cm^2