Evaluate `6 sin 20^(@) - 8 sin^(3)20^(@)`.

Find the value of 3sin20^(@)-4sin^(3)20^(@).

The value of (6sin20^(@)-8sin^(3)20^(@))^(4) is equal to

Evaluate: (96 sin 65^(@) sin35^(@) sin80^(@))/(sin20^(@) + 2 sin 80^(@) cos30^@)

Find the value of sin^(2)20^(@)+sin^(2)70^(@)

sin 20^(@) (4 + sec 20^(@)) =

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

The value of (tan^(2)20^(@)-sin^(2)20^(@))/(tan^(2)20^(@).sin^(2)20^(@)) is