Answer
Tan (7π/3) = √3
csc (-330°) = 2
Step-by-step explanation
tan (7π/3) Note: π radians = 180°
tan [(7 x 180°)/3]
tan 420° = tan (420 - 360)° = Tan 60°
tan 60° = √3
∴ tan (7π/3) = √3
csc (-330°) = csc (-330° + 360°)
csc (30°) = 1/sin (30°) = 1 ÷ 1/2 = 2
∴ csc (-330°) = 2