so since cot is undefined, we can find the tan = 0 right because tan is the reciprocal of cot. then you can use the equation 1 + tan^2 = Sec^2
so sec = -1
and the cos = -1 too because it is the reciprocal of sec.
you can find the sin from this equation sin^2 + Cos^2 = 1
so sin = 0
and csc would be undefined because it is the reciprocal of sin and the reciprocal of 0 is 1/0 which is undefined.