Using a Calculator (Leaving Cert Mathematics): Flashcards

$\sin$, $\cos$, $\tan$

$60'$ (written as $1° = 60'$)

SHIFT key

$\sin^{-1}$, $\cos^{-1}$, $\tan^{-1}$

Degree mode

Only round the final answer

°/'" key

$0.5736$

$0.6873$

$60°$

$0.3040$

Ratio from angle, angle from ratio, degrees/minutes

$0.3°$ (divide by 60)