SOLUTION: exact value of sin(7pi/6)

Question 257084: exact value of sin(7pi/6)
Found 2 solutions by Alan3354, drk:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
= -0.5
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
sin(7pi/6) is the same thing as sin(pi/6) but in Quadrant III.
sin(pi/6) = 1/2
Sin is negative in quadrant III, so,
sin(7pi/6) = -1/2
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