find the area of Triangle ABC
wwch AB - AC-20cm BC-30 cm
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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
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