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" Show that "8cos^(3)20^(@)-6cos20^(@)=...

" Show that "8cos^(3)20^(@)-6cos20^(@)=

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8 cos^(3) 20^(@) -6 cos 20^(@) =

sqrt(3)cot20^(@)-4cos20^(@)=

If A=6 sin20^(@) - 8 sin^(3) 20^@ , B= 8 cos^(3) 20^(@)-6 cos 20^(@) and C= ( sin 3 theta )/( sin theta ) - ( cos 3 theta )/( cos theta ) then

Show that sqrt(3)cos ec20^(@)-sec20^(@)=4

Show that sqrt(3)cos ec20^(@)-sec20^(@)=4

sqrt3 cot20^(@)-4cos20^(@)=

Show that sqrt3/(sin20^@)-1/(cos20^@)=4

Prove that: cos20^(@)cos40^(@)cos80^(@)=(1)/(8)

Prove that: cos20^(@)cos40^(@)cos80^(@)=1/8

Prove that : cos20^(@)cos40^(@)cos80^(@)=1/8