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Use of Trigonometric Table

Find the valu...

Question

Find the value of $sin 120^{o}$

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Solution

$sin 120 °$

$= sin (180 ° - 60 °)$

$= sin 60 ° (∵ sin (180 ° - θ) = sin θ)$

$= \frac{\sqrt{3}}{2}$

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