what are the six trig functions of theta (-12,-15)
r = √[ (-12)2 + (-15)2 ] = √289 = 17
sin Θ = -15 / 17 csc Θ is the reciprocal
cos Θ = -12 / 17 sec Θ is the reciprocal
tan Θ = -15 / -12 = 15 / 12 cot Θ is the reciprocal
