Cos^2(a+b)-cos^2(a-b)= -sin2asin2b )

Question

Математика: Cos^2(a+b)-cos^2(a-b)= -sin2asin2b )

manilipitaozk746 · Accepted Answer

396 : 2 = 198 180 : 2 = 90
198 : 2 = 99 90 : 2 = 45
99 : 3 = 33 45 : 3 = 15
33 : 3 = 11 15 : 3 = 5
11 : 11 = 1 5 : 5 = 1
396 = 2 * 2 * 3 * 3 * 11 180 = 2 * 2 * 3 * 3 * 5

НОК (396 и 180) = 2 * 2 * 3 * 3 * 5 * 11 = 1 980 - наименьшее общее кратное
1 980 : 396 = 5 1 980 : 180 = 11

MOGZ ответил