$tan(θ - 14π)$ is equal to:

$tanθ$ $-cotθ$ $cotθ$ $-tanθ$

$tanθ$

tan ( θ - 14Π ) = tan( - ( 14Π - θ ) ) = - tan ( 14Π - θ ) = - tan ( 2 × 7Π - θ ) We know , tan(2 × nΠ - θ ) = - tanθ = - ( - tanθ ) = tanθ