sint = sin(t)cost = cos(t)tgt = tan(t)ctgt = cot(t)
Применяя формулы приведения sin(3π/2 - t) = -cos(t), cos(3π/2 - t) = sin(t), tan(3π/2 - t) = -cot(t), cot(3π/2 - t) = -tan(t), получаем:
sint = -cos(t)cost = sin(t)tgt = -cot(t)ctgt = -tan(t)
sint = sin(t)
cost = cos(t)
tgt = tan(t)
ctgt = cot(t)
Применяя формулы приведения sin(3π/2 - t) = -cos(t), cos(3π/2 - t) = sin(t), tan(3π/2 - t) = -cot(t), cot(3π/2 - t) = -tan(t), получаем:
sint = -cos(t)
cost = sin(t)
tgt = -cot(t)
ctgt = -tan(t)