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