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What is the value of sin120

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What is the value of sin120

Posted by Nik . 5 years, 11 months ago

CBSE > Class 10 > Mathematics

7 answers

Aviral Goyal 5 years, 11 months ago

Sin120=sin60=root3/2

Diksha? 5 years, 11 months ago

Sin(90-x) =Cosx

Tanya Singh 5 years, 11 months ago

Yes diksha, what's wrong?

Tanya Singh 5 years, 11 months ago

Sin (90+x)=cos x, So sin(90+30)=cos 30, So sin 120=√3/2

Tanya Singh 5 years, 11 months ago

√3/2

Yogita Ingle 5 years, 11 months ago

From the trigonometric formulas,

As we know that, sin (90 + x) = cos x

Then as peer the given,

Sin ( 90 + 30) = cos 30

{tex}cos 30 = \frac{\sqrt3}{2}{/tex}
Therefore, the value of sin 120 degree is {tex}\frac{\sqrt3}{2}{/tex}.

Divyanshu B 5 years, 11 months ago

Maybe add sin 90 + sin 30.

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