MATH formulas tk

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9 Terms

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Arc Length

(mArc AB / 360) × 2πr

2
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Area of a Circle

πr²

3
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Circumference of a Circle

2πr

4
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Sector Area

(mArc AB / 360) × πr²

5
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Area of a Segment

(mArc AB / 360) × πr² -1/2bh

6
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Area of an Annulus

πr² - πr

7
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Area of a Regular Polygon

½ a × ns

8
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Special Right T relationship:

30-60-90: base is x, hyp is 2x, long side is x square root of 3

45-45-90: base is x, hyp is x square root of 2

9
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