Question

How do you find the values of the six trigonometric functions given `cottheta` is undefined and `pi/2<=theta<=(3pi)/2`?

Answer 1

Use unit circle -->
cot t is undefined when `t = pi`
`cos t = cos pi = - 1`
`sin t = sin pi = 0`
`tan t = tan pi = 0`
`sec t = 1/(cos) = 1/-1 = - 1`
`csc t = 1/(sin) = 1/0 =` undefined