Question

Найдите значения выражения 


$[tex]16tg( alpha - frac{3 pi }{2}) -cos(- pi - frac{5 pi }{2} ) alpha =- frac{ pi }{3}$

Answer 1

16tg(-π/3 - 3π/2) - cos(-π - 5π/2) = -16tg(-11π/6) - cos(-7π/2) = 16tg(π + 5π/6) - cos(4π - π/2) = 16tg(5π/6) - cos(π/2) = -16tg(π/6) - 0 = -16√3/3