Radians (HSC SSCE Mathematics Advanced): Flashcards

Angle when arc length equals radius

$360°$

$180°$

Multiply by $\frac{\pi}{180°}$

Multiply by $\frac{180°}{\pi}$

All positive

Acute angle between terminal side & horizontal axis

$\pi - \theta$

$\frac{\sqrt{3}}{2}$

Radian mode