Trigonometric Ratios and Formulas

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What is the sine ratio in a right triangle?
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The sine of an angle is the length of the opposite side divided by the length of the hypotenuse.
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How is cosine defined in a right triangle?
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Cosine is the length of the adjacent side divided by the hypotenuse.
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Define the tangent ratio in a right triangle.
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Tangent is the length of the opposite side divided by the adjacent side.
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State the Pythagorean identity.
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The Pythagorean identity is sin²θ + cos²θ = 1.
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What is the formula for finding an angle using the tangent function?
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The formula is tan⁻¹(opposite/adjacent).
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What is the reciprocal of sine called?
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The reciprocal of sine is called cosecant.
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