Trig Formulas Unit 1

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Geometry & Trigonometry

Last updated 3:55 AM on 8/26/26
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17 Terms

1
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yr\frac{y}{r}

sin(θ)\text{sin}(\theta)

2
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xr\frac{x}{r}

cos⁡(θ)\cos(\theta)

3
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yx∧sin⁡(θ)cos⁡(θ)\frac{y}{x}\land\frac{\sin\left(\theta\right)}{\cos\left(\theta\right)}

tan⁡(θ)\tan(\theta)

4
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csc⁡(θ)\csc(\theta)

ry∧1sin⁡(θ)\frac{r}{y}\land\frac{1}{\sin\left(\theta\right)}

5
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sec(θ)\text{sec}(\theta)

rx∧1cos⁡(θ)\frac{r}{x}\land\frac{1}{\cos\left(\theta\right)} .

6
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cot⁡(θ)\cot\left(\theta\right)

xy∧1tan⁡(θ)\frac{x}{y}\land\frac{1}{\tan\left(\theta\right)} .

7
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sin⁡(θ)cos⁡(θ)\frac{\sin\left(\theta\right)}{\cos\left(\theta\right)}

tan⁡(θ)\tan\left(\theta\right)

8
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cos⁡(θ)sin⁡(θ)\frac{\cos\left(\theta\right)}{\sin\left(\theta\right)}

cot⁡(θ)\cot\left(\theta\right)

9
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sin⁡2(θ)+cos⁡2(θ)=\sin^2\left(\theta\right)+\cos^2\left(\theta\right)=

1

10
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1+tan⁡2(θ)=1+\tan^2\left(\theta\right)=

sec⁡2(θ)\sec^2\left(\theta\right)

11
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1+cot⁡2(θ)=1+\cot^2\left(\theta\right)=

csc⁡2(θ)\csc^2\left(\theta\right)

12
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1csc⁡(θ)\frac{1}{\csc\left(\theta\right)}

sin⁡(θ)\sin\left(\theta\right)

13
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1sec⁡(θ)\frac{1}{\sec\left(\theta\right)}

cos⁡(θ)\cos\left(\theta\right)

14
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1cot⁡(θ)\frac{1}{\cot\left(\theta\right)}

tan⁡(θ)\tan\left(\theta\right)

15
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1sin⁡(θ)\frac{1}{\sin\left(\theta\right)}

csc⁡(θ)\csc\left(\theta\right)

16
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1cos⁡(θ)\frac{1}{\cos\left(\theta\right)}

sec⁡(θ)\sec\left(\theta\right)

17
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1tan⁡(θ)\frac{1}{\tan\left(\theta\right)}

cot⁡(θ)\cot\left(\theta\right)