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Value of (4\ sin 9^@ sin 21^@ sin 39^@ s...

Value of `(4\ sin 9^@ sin 21^@ sin 39^@ sin 51^@ sin 69^@ sin 81^@)/(sin 54^@)` is equal to

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sin 12^(@) sin 48^(@) sin 54^(@) is equal to

sin 12^(@) sin 48^(@) sin 54^(@) is equal to

sin 12^(@) sin 48^(@) sin 54^(@) is equal to

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

(4sin9^(@)sin21^(@)sin39^(@)sin51^(@)sin69^(@)sin81^(@))/(sin54^(@))

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-

sin 12^(@)sin 48^(@)sin 54^(@)=