## Trigonometry 7th Edition

$\tan 195^{\circ} 10'$ = 0.2711
Given function- $\tan 195^{\circ} 10'$ We have to convert it to decimal degrees first- $\tan 195^{\circ} 10'$ = $\tan (195^{\circ} + 10')$ = $\tan (195^{\circ} + (\frac{10}{60})^{\circ})$ = $\tan (195^{\circ} + (0.1667)^{\circ})$ = $\tan 195.1667^{\circ}$ Using calculator in degree mode- 195.1667 → $\tan$ $\tan 195.1667^{\circ}$ = 0.2710699881 Rounding it to four places past the decimal point- $\tan 195.1667^{\circ}$ = 0.2711 or $\tan 195^{\circ} 10'$ = 0.2711