Name Simplifying Trigonometric Expressions cos x tan x sin x tan? x co's x sec x cosz x cos x CSC x -1 tan x - csc x sec x cos x - sin x tan x csc x cotx see2 x tan x secx secx CSC X -sec2 x csc x sin x sec x sin x cotx sec2 x - sec2 x cos2 x tan x sec x scx - 1 csc2 x (1 - sin2 x) 1 tan x + cotx - sin x sin x cos x (sec x - cosx) secx - Cos x cot x cos x + sin x tan x (cot x - cscx) sin x secx + cos x sin2 x (sec2 x + csc2 x) -1 csc2 x - cos2 xcsch x (1 + sin x) (1 - sin x) - cos 1 - sink x sec x cot x - cot x cos" x (sec x + tan x) (secx - tan sec- x - 1 secx Copyright Arie Thomas