Precalc Flashcard Trig Identities

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Is this a Pythagorean identity? tan^2 x + 1 = sec x

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No, the correct identity is tan^2 x + 1 = sec^2 x.

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What is the definition of a trigonometric identity?

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A trigonometric identity is an equation involving trigonometric functions that is true for all values of the variable where both sides are defined.

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State the Pythagorean identity for sine and cosine.

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What is the relationship between sine and cosecant?

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What is the relationship between cosine and secant?

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What is the formula for cotangent in terms of sine and cosine?

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