Question

write all the identities of trigonometry.​

Answer 1

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Trigonometry Identities :

$\sin( \alpha ) {}^{2} + \cos( \alpha ) {}^{2} = 1$

$\sec( \alpha ) {}^{2} - \tan( \alpha ) {}^{2} = 1$

$\csc( \alpha ) {}^{2} - \cot( \alpha ) {}^{2} = 1$

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Answer 2

The three main functions in trigonometry are Sine, Cosine and Tangent.

They are just the length of one side divided by another

For a right triangle with an angle θ :

sin=opposite/hypotenuse cos=adjacent/hypotenuse tan=opposite/adjacent

Sine Function:

sin(θ) = Opposite / Hypotenuse

Cosine Function:

cos(θ) = Adjacent / Hypotenuse

Tangent Function:

tan(θ) = Opposite / Adjacent