Six Trigonometric Functions and Trigonometric Identities

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Six Trigonometric Functions and Trigonometric Identities

Csc

Inverse is 1/Sin

r/y

Cot

Inverse is 1/Tan

x/y

Sin

Inverse is 1/Csc

y/r

Tan

Inverse is 1/Cot

Odd

y/x

Pythagorean Identities

Cot^2 -1 = Csc^2

Tan^2 + 1 = Sec^2

Sin^2 + Cos^2 = 1

Sec

Inverse is 1/Cos

r/x

Cos

Inverse is 1/Sec

Even

x/r