Question Detail
Question
Which of the following is not the same as tan(t)?
Correct Answer
Option D is the correct answer.
Detailed Explanation
tan(t+π/2) = -cot(t), which is not equal to tan(t) in general. The others: -tan(-t) = -(-tan t) = tan t, tan(t+2π) = tan t, tan(t+π) = tan t.
Hint
Recall the periodicity and transformations of tangent function.