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/Tag: Arc lengths
5 11, 2016

## Arc Length

Arc Length $L=\theta\;r$ worked examples further examples harder examples a. $8\pi=\frac{2\pi}{3}\times\;r$ $24\pi=2\pi\;r$ r = 12 units b. segment XPY A = ½ r2(θ - sin θ) A = ½ × (12√3)2($\pi$/3 - sin $\pi$/3) A = 216($\pi$/3 - √3/2) u2 A = [...]

3 08, 2016

## Trig Maxima/Minima

Trig Maxima/Minima worked examples further examples harder examples trig functions maxima/minima forum

11 08, 2015

## Differentiating and Integrating Trig

Arc lengths, Sectors & Segments Arc Length $L=\theta\;r$ Area of Sector $A=\frac12 r^2\theta$ Area of Segment $A=\frac12r^2(\theta-sin\;\theta)$ worked examples A given circle has an area of 60cm², find the size of the angle in degrees and minutes that an [...]