347. 1) Вычислите tan(alpha + beta) если tan alpha = - 3/4 tan beta = 2, 4

tan(alpha + beta) = (tan alpha + tan beta) / (1 - tan alpha * tan beta)

tan(alpha + beta) = (-3/4 + 2,4) / (1 + 6) tan(alpha + beta) = (2,1) / 7 tan(alpha + beta) = 0,3