2sin(12^(@)) -sin (72^(@)) का मान है -...

`2sin(12^(@)) -sin (72^(@))` का मान है -

`(sqrt(5)(1-sqrt(3)))/4`

`(1-sqrt(5))/8`

`(sqrt(3)(1-sqrt(5)))/(2)`

`(sqrt(3)(1-sqrt(5)))/(4)`

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2sin(12^(@)) -sin (72^(@)) का मान है -
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