Find the values of the trigonometric functions

(a) cosec (−1410°)

(b) tan (19π / 3)

(a) cosec(-1410°) = cosec(-1410° + 4 × 360°)

= cosec(-1410° + 1440°)

= cosec30° = 2

(b) tan(19π/3) = tan(6π + π/3)

= tan(π/3) = tan(60°) = √3