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*📚Trigonometry Formulas & Identities*

*📐Basic Formulas :*

sin θ = Opposite Side/Hypotenuse.

cos θ = Adjacent Side/Hypotenuse.

tan θ = Opposite Side/Adjacent Side.

sec θ = Hypotenuse/Adjacent Side.

cosec θ = Hypotenuse/Opposite Side.

cot θ = Adjacent Side/Opposite Side.

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*📉Given below are some more inverse trigonometry formulas :*

sin -1 (-x) = – sin -1 x

cos -1 (-x) = – sin -1 x

tan -1 (-x) = – tan -1 x

cosec -1 (-x) = – cosec -1 x

sec -1 (-x) = – sec -1 x

cot -1 (-x) = – cot -1 x

sin -1 (1/x) = cosec -1 x

cos -1 (1/x) = sec -1 x

tan -1 (1/x) = cot -1 x

tan -1 (1/x) = cot -1 x

sin -1 (x) + cos -1 (x) = π/2

tan -1 (x) + cot -1 (x) = π/2

sec -1 (x) + cosec -1 (x) = π/2

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