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sin(2 pi)/(7)+sin(4 pi)/(7)+sin(8 pi)/(7...

sin(2 pi)/(7)+sin(4 pi)/(7)+sin(8 pi)/(7)

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Statement I sin((2pi)/(7))+sin((4pi)/(7))+sin((8pi)/(7))=- 1/2 . Statement II cos. (2pi)/(7)+I sin . (2pi)/(7) is complex 7th root of unity.

Statement I sin((2pi)/(7))+sin((4pi)/(7))+sin((8pi)/(7))=- 1/2 . Statement II cos. (2pi)/(7)+I sin . (2pi)/(7) is complex 7th root of unity.

(sin((2 pi)/(7))+sin((4 pi)/(7)) -sin((6 pi)/(7)))/(sin((pi)/(7))sin((3 pi)/(7))sin((5 pi)/(7))) is equal to

Find the value of sin((pi)/(7))sin((2 pi)/(7))sin((4 pi)/(7))=

The value of sin (pi)/(7)+sin (2 pi)/(7)+sin (3 pi)/(7) is

Show that: sin((2pi)/7)+ sin ((4pi)/7) + sin( (8pi)/7) = sqrt7/2 .

The value of sin""(2pi)/(7)+sin""(4pi)/(7)+sin""(8pi)/(7), is

The value of sin""(2pi)/(7)+sin""(4pi)/(7)+sin""(8pi)/(7), is