Science Bowl Question

W) cos(-x) = cos(x) [cosine of negative x equals cosine of x]

X) tan(-x) = tan(x) [tangent of negative x equals tangent of x]

Y) The amplitude of y = -2 cos(t) is equal to 2

Z) The range of y = -5 sin(t) is [-5, 5] [the closed interval from negative 5 to 5]