Law of motion Sir Isaac Newton was one of the greatest scientists and mathematicians that ever lived. He was born in England on December 25, 1643. He was born the same year that Galileo...
Method 1: Let AB = a AC = a BC = 20-2a Angle A = 120 Cos 30 = (20-2a)/a √3/2 = 20-2a/a a√3 = 40-4a a( √3 +4) = 40 a = 40/(√3+4) Method 2: A = b/√3 B(2+√3)...