" The value of "(4cos^(3)40^(@)-3sin50^(@))=

The value of {cos(40^(@)+theta)-sin(50^(@)-theta)} is

The value of cos(40^@+theta)-sin(50^@-theta) is

The value of (2sin40^(@).sin50^(@).tan10^(@))/(cos 80^(@)) is

The value of (2sin40^(@).sin50^(@).tan10^(@))/(cos 80^(@)) is

The value of (2sin40^(@).sin50^(@).tan10^(@))/(cos 80^(@)) is

What is the value of 4(cos^(2)(10^(@))+cos^(2)(50^(@))-sin40^(@)sin80^(@))

Find the value of (cos^(4)1^(@)+cos^(4)2^(@)+cos^(4)3^(@)+......+cos^(4)179^(@))-(sin^(4)1^(@)+sin^(4)2^(@)+sin^(4)3^(@)+.......+sin^(4)179^(@)) .

The value of sin40^@-cos50^@ is

Evaluate: sin^(2)40^(@)-cos^(2)50^(@)

If (4cos^(2)40^(@)-3)(3-4sin^(2)40^(@))=a+b cos20 then find the value of (a-b)