find the coordinates ofPand the exact values of the trigonomic functions attwhenever possible.

given

My answers

Sin(t) = 0 csc(t)= 1/0 or Undefined

cos(t) = 1 sec(t) = 1/1 or 1

tan(t) = 0/1 or 0 cot(t)= 1/0 or Undefined

The book

Sin(t) = 0 csc(t)= 1/0 or Undefined

cos(t) =- 1 sec(t) = - 1/1 or - 1

tan(t) = 0/1 or 0 cot(t)= 1/0 or Undefined

Given that the the point is why is cos(t) -1 as opposed to 1?