Trigonometric Identitiess & Equations

Switched over from Vaia

cot (-x)=

-cot x

sec (-x)=

sec x

csc (-x)=

-csc x

tan (-x)=

-tan x

cos (-x)=

cos x

sin (-x)=

-sin x

sec θ=

csc(⛩/2 - θ)

csc θ=

sec (⛩/2 - θ)

tan θ=

cot (⛩/2 -θ)

cot θ=

tan (⛩/2 - θ)

sin θ=

cos (⛩/2 - θ)

cos θ=

sin (⛩/2 - θ)

Third equation that equals 0

1+cot²θ-csc²θ

cot² θ=

csc²θ - 1

Third equation that equals 1

csc²θ - cot²θ

csc²θ=

1 + cot²θ

Second equation that equals 0

tan²θ - sec² θ +1

Second equation that equals 1

sec²θ - tan²θ

tan² θ=

sec²θ - 1

sec² θ=

tan²θ + 1

0=

sin²θ + cos²θ - 1

cos²θ=

1-sin²θ

sin²θ=

1-cos²θ

1=

sin²θ + cos²θ