Integrals of tan, cot, sec, and csc

Question 1

[integral] tan(x)

Answer 1

• ln abs(cos(x)) + C

Question 2

[integral] cot(x)

Answer 2

ln abs(sin(x)) + C

Question 3

[integral] sec(x)

Answer 3

ln abs(sec(x) + tan(x)) +C

Question 4

[integral] csc(x)

Answer 4

• ln abs((csc(x) + cot(x)) +C