Evaluate (if possible) the sine, cosine, and tangent at the real number t. (If an answer is undefined, enter UNDEFINED.) t = 4π 3 sin

Question

Evaluate (if possible) the sine, cosine, and tangent at the real number t. (If an answer is undefined, enter UNDEFINED.) t = 4π 3 sin

Answer 1

I don't know how to interpret what t = 4π 3Sin is. Maybe it is 240°, but then I don't what Sin at the end is.