derivative of tan x
sec^2(x)
derivative of cosec x
-cosec x cot x
derivative of cot x
-cosec^2 x
derivative of sec x
sec x tan x
integral of tan kx
integral of cot kx
integral of cosec kx
integral of sec kx
integral of sec^2 kx
equal 10 pi/2 for positive x and -pi/2 for negative x
ways to rewrite this
arctan(1/x)=
arccot(x)
arccos(cos(x)) graph sketch etc……..
Wiestrass substitution
Loophole log trick for f(x) ^ g(x)