1) Evaluate (if possible) the sine, cosine, and tangent of the angles without a calculator.
a) 10pi/3
Sin = -sqrt 3/2
Cos = -1/2
Tan = sqrt 3
Are these correct ? I do not understand when to make them negative.
b) 17pi/3
Sin = -sqrt 3/2
Cos = 1/2
Tan = - sqrt 3
Are these correct?