show that `sin^2 6^@ + sin^2 12^@ + sin^2 18^@ + ... + sin^2 84^@ + sin^2 90^@ = 8.`

sin^2 5^@+sin^2 10^@ + sin^2 15^@+.........+sin^2 85^@+sin^2 90^@ equals to

sin ^2 5^@ + sin ^2 10^@ + sin ^2 15 ^2 + …….. + sin^2 90^2 =

The value of sin^2 5^@ + sin^2 10^@ + sin^2 15^@ + sin^2 20^@ + ... + sin^2 90^@ is:

What is the value of the sin^(2) 6^(@) + sin^(2) 12^(@) + sin^(2) 18^(@) + "……" + sin^(2) 84^(@) + sin^(2) 90^(@) ?

sin^(2)5^@+sin^(2)10^@+sin^(2)15^@ +.......+sin^(2)85^@ + sin^(2)90^@=

The value of sin^(2) 1^(@) + sin^(2) 2^(@) + sin^(2) 3^(@)+ . . . . + sin^(2) 89^(@) + sin ^(2) 90^(@) is

Show that sin^(2) 12^(@)+ sin ^(2)21^(@)+ sin ^(2)39^(@)+ sin^(2)48^(@)=1+ sin^(2)9^(@)+ sin^(2)18^(@)

The value of sin ^(2) 12 ^(@) + sin ^(2) 12 ^(@) + sin ^(2) 39^(@) + sin ^(2) 48^(@) - sin ^(2) 9^(@) - sin ^(2) 18^(@) is "______"