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8 Basic Trigonometric Identities
This deck covers the fundamental trigonometric identities, including reciprocal, ratio, and Pythagorean identities.
Reciprocal: csc(θ) =
csc(θ) = 1/sin(θ)
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Key Terms
Term
Definition
Reciprocal: csc(θ) =
csc(θ) = 1/sin(θ)
Reciprocal: sec(θ) =
sec(θ) = 1/cos(θ)
Reciprocal: cot(θ) =
cot(θ) = 1/tan(θ)
Ratio: tan(θ) =
tan(θ) = sin(θ)/cos(θ)
Ratio: cot(θ) =
cot(θ) = cos(θ)/sin(θ)
Pythagorean: sin costs = $1
(sinθ)^2 + (cosθ)^2 = 1
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| Term | Definition |
|---|---|
Reciprocal: csc(θ) = | csc(θ) = 1/sin(θ) |
Reciprocal: sec(θ) = | sec(θ) = 1/cos(θ) |
Reciprocal: cot(θ) = | cot(θ) = 1/tan(θ) |
Ratio: tan(θ) = | tan(θ) = sin(θ)/cos(θ) |
Ratio: cot(θ) = | cot(θ) = cos(θ)/sin(θ) |
Pythagorean: sin costs = $1 | (sinθ)^2 + (cosθ)^2 = 1 |
Pythagorean: I tan = get sic | 1 + (tanθ)^2 = (secθ)^2 |
Pythagorean: I cut = crescent rolls | 1 + (cotθ)^2 = (cscθ)^2 |