Cofunction Iden.ies, radians Cofunction Iden.ies, degrees. sin 90  x = cos x. cos 90  x = sin x. tan 90  x = cot x, cot 90  x = tan x. sec 90  x = csc x, csc 90  x = sec x .
Odd/Even Iden.ies. sin x = sin x. cos x = cos x. tan x = tan x. csc x = csc x. sec x = sec x. cot x = cot x.Pythagorean iden.ies. Sum and difference formulas. Double angle formulas. Half angle formulas. Products as sums. Sums as products..Sin 2 x + cos 2 x = 1. tan 2 x + 1 = sec 2 x cot 2 x + 1 = csc 2 x sin x y = sin x cos y cos x sin y. cos x y = cos x cosy sin x sin y.Tr.nometric functions, iden.ies, formulas and the sine and cosine laws are presented..
Related posts to identities cot

Mathwords Trig Iden Ies
Trig Iden.ies. Iden.ies involving trig functions are listed below. Pythagorean Iden.ies. sin 2 + cos 2 = 1. tan 2 + 1 = sec 2 cot x = cot x .

Tr Nometric Iden Ies Maths Resources
The Tr.nometric Iden.ies are equations that are true for Right Angled Triangles. If it is not a Right Angled Triangle go to the Triangle cot 2 + 1 = csc 2 .

List Of Tr Nometric Iden Ies Wikipedia
Finally, the reciprocal functions secant sec , cosecant csc , and cotangent cot are the reciprocals of the cosine, sine, and tangent: = , = , = = . These definitions are sometimes referred to as ratio iden.ies..

Tr Nometric Iden Ies Purplemath
Tan x =1cot x =sin x cos x an x = \dfrac{1}{\cot x } = \dfrac{\sin x }{\cos x }tan x =cot x 1=cos x sin x . Notice how a "co something " trig ratio is always the reciprocal of some "nonco" ratio. .