Find \sin(120)

Carole Yarbrough 2021-12-22 Answered
Find \(\displaystyle{\sin{{\left({120}\right)}}}\)

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Expert Answer

ambarakaq8
Answered 2021-12-23 Author has 1295 answers
\(\displaystyle{\sin{{\left({120}\right)}}}={\sin{{\left({180}-{120}\right)}}}={\sin{{\left({60}\right)}}}={\frac{{\sqrt{{{3}}}}}{{{2}}}}\)
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ol3i4c5s4hr
Answered 2021-12-24 Author has 1531 answers
\(\displaystyle{\sin{{\left({120}°\right)}}}={\frac{{\sqrt{{{3}}}}}{{{2}}}}\)
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user_27qwe
Answered 2021-12-30 Author has 9558 answers

\(\sin(120)=\cos(90-120)\)
\(=\cos(-30)\)
As \(\cos(-x)=\cos(x)\)
\(\cos(-30)=\cos(30)=\frac{\sqrt{3}}{2}\)

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