The value of `sin^(2)65^(@)+sin^(2)25^(@)+cos^(2)35^(@)+cos^(2)55^(@)` is

The value of sin^(2)15^(@)+sin^(2)25^(@)+sin^(2)65^(@)+sin^(2)75^(@) is

The value of [ ( sin^(2) 25^(@) + sin^(2) 65^(@))/(cos^(2) 24^(@) + cos^2 66^(@)) + sin^(2)61^(@) + cos 61^@ sin 29^(@)] is :

Evaluate: sin^(2)35^(@)-cos^(2)55^(@)

Evaluate: cos^(2)25^(@)-sin^(2)65^(@)-tan^(2)45^(@)

cos^(2)25^(@)+cos^(2)35^(@)-cos25^(@) cos35^(@)=

The value of (sin 85^(@)-sin 35^(@))/(cos 65^(@))=

The value of cos 20^(@)+2sin^(2)55^(@)-1-sqrt(2)sin65^(@) =

The value of (sin65^(@))/(cos25^(@)) is

(sin 65^(@) + sin 25^(@))/( cos 65^(@) + cos 25^(@))=

sin25^(@)cos65^(@)+cos25^(@)sin65^(@)