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8sin^(3)40^(@)-6sin40^(@)...

8sin^(3)40^(@)-6sin40^(@)

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sin^(3)20^(@)+sin^(3)40^(@)-sin^(3)80^(@)=

4cos^(3)40^(@)-3sin50^(@)=

Prove that: sin20^(@)sin40^(@)sin80^(@)=(sqrt(3))/(8)

Prove that,sin20^(@)sin40^(@)sin80^(@)=(sqrt(3))/(8)

Prove that 8 sin20^(@) sin40^(@) sin80^(@) = sqrt3

Prove that sin20^(@)sin40^(@)sin80^(@)=(sqrt(3))/(8)

Prove that sin20^(@)sin40^(@)sin80^(@)=(sqrt(3))/(8)

Prove that: i) sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3/16 ii) sin10^(@)sin50^(@)sin60^(@)sin70^(@)=sqrt(3)/16 iii) sin20^(@)sin40^(@)sin80^(@)=sqrt(3)/8

Prove that: i) sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3/16 ii) sin10^(@)sin50^(@)sin60^(@)sin70^(@)=sqrt(3)/16 iii) sin20^(@)sin40^(@)sin80^(@)=sqrt(3)/8