Radians (Leaving Cert Mathematics): Flashcards

A way to measure angles using arc length relative to radius

Angle where arc length equals radius ($s = r$)

$2pi$ radians = $360^circ$

$180^circ$

Multiply by rac{pi}{180}

Multiply by rac{180}{pi}

rac{pi}{6}

rac{pi}{4}

rac{pi}{2}

$pi$

$2pi$

Angular velocity and angular displacement

Arc length and sector area