SOLUTION: I need to find out the sin of this trig function it's sin(-71pi/6) I know that the reference that would work with this function is pi/6 and I know the sin of pi/6 is 1/2 but how wo

Question 806619: I need to find out the sin of this trig function it's sin(-71pi/6) I know that the reference that would work with this function is pi/6 and I know the sin of pi/6 is 1/2 but how would I solve it when there is a negative in the parentheses.
Found 2 solutions by solver91311, richwmiller:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

If the argument is negative, then you are simply going around the unit circle clockwise instead of counter clock wise. If it was you would go around the circle 11 times and then end up at 71 - 66 is 5, so . Now go backwards around the circle ll times and further in the negative (clockwise) direction and where do you end up?

John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it

Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
sin(+71pi/6)=-1/2
sin(-71pi/6)=1/2
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