Keep scrolling down for answers and more stats ...
3. tan x =
using this, along with #1 and #2, we can derive the identity tan x = sin x / cos x
4. sec x =
sec x = 1 / cos x by definition
5. csc x =
csc x (also written cosec x) = 1 / sin x by definition
6. cot x =
cot x = 1 / tan x; using this along with #3 we can derive the identity cot x = cos x / sin x