Further Maths - Radians
How many radians in a full circle?
\[2\pi\]
How many radians in $360^{\circ}$?
\[2\pi\]
How many circles in a half turn?
\[\pi\]
What is $180^{\circ}$ in radians?
\[\pi\]
What is $\frac{\pi}{2}$ radians in degrees?
\[90^{\circ}\]
What is $90^{\circ}$ degrees in radians?
\[\frac{\pi}{2}\]
What is $\frac{\pi}{3}$ radians in degrees?
\[60^{\circ}\]
What is $60^{\circ}$ degrees in radians?
\[\frac{\pi}{2}\]
What is $\frac{\pi}{6} radians in radians?
\[30^{\circ}\]
What is $30^{\circ}$ degrees in radians?
\[\frac{pi}{6}\]
What is $\frac{pi}{4}$ radians in degrees?
\[45^{\circ}\]
What is $45^{\circ}$ degrees in radians?
\[\frac{\pi}{4}\]
What is the formula for arc length in terms of $r$ and $\theta$ for radians?
\[r\theta\]
What is the formula for the volume of a sector in terms of $r$ and $\theta$ for radians?
\[\frac{1}{2}r^2\theta\]