The value of sin 210° is
a
\(-\frac{1}{2}\)
b
\(-\frac{\sqrt{3}}{2}\)
c
\(\frac{1}{2}\)
d
\(\frac{\sqrt{2}}{2}\)
e
\(\frac{\sqrt{3}}{2}\)
Explanation
Correct Option
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Norah09
3 months ago
sine is negative (-) in the 3rd quadrant on the cartesian plane and the 3rd quadrant is thita minus 180 so sin 210 = -sin(210-180) =- sin 30 and sin 30 is 1/2 therefore -sin 30=-1/2
