I have to verify these trig identities but I have absolutely no idea where to start.
1. sin x+cos xcot x= csc x
2. tan x 1+sec x
------- + ---------- = 2csc x
1+sec x tan x
3.(sec^2 x -1)(sin^2 x -1)= -sin^2 x
4. sin^3 x + cos^3 x
------------------------- = 1-sin xcos x
sin x + cos x
1. sin x+cos xcot x= csc x
2. tan x 1+sec x
------- + ---------- = 2csc x
1+sec x tan x
3.(sec^2 x -1)(sin^2 x -1)= -sin^2 x
4. sin^3 x + cos^3 x
------------------------- = 1-sin xcos x
sin x + cos x