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Flashcards in Core 2 Deck (5)
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1

How do you work out the length of an arc?

Rø (theta) -in radians

2

What is the area of a sector?

1/2r^2ø (theta) -in radians

3

How do you find the equation of a circle?

(x-h)^2+(y-k)^2=r^2
With (h,k) being the centre and r being the radius.

4

How do you find the length of a line?

Find the difference of the X and y coords, square them and add together. Then square root.

5

How do you find the midpoint of a line?

To find the X coord, you add the two and halve. Repeat for the y coord.