sin^(2)24^(@)-sin^(2)6^(@)" is equal to "

It is given that sin54^(@)=(sqrt(5)+1)/(4), the value of (64sin^(4)27^(@)-64sin^(2)27^(@)+6)^(2)-15(sin^(2)27^(@)+sin^(2)63^(@)) is equal to

sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+ .....+sin^(2)85^(@)+sin^(2)90^(@) is equal to

sin^(2)21^(@) + sin^(2) 69^(@) is equal to

The value of sin^(2)1^(@)+sin^(2)2^(@)+sin^(2)3^(@)+....+sin^(2)88^(@)+sin^(2)89^(@) is equal to

sin ^(2) 25^(@) + sin ^(2) 65^(@) is equal to

sin^(2)(35^(@))+sin^(2)(55^@) is equal to

sin^(2)24^(@)-cos^(2)84^(@)=?

sin^(2)5^(@) + sin^(2)25^(@) + sin^(2)45^(@) + sin^(2) 65^(@) + sin^(2) 85^(@) is equal to: