The value of `sin^(2)51^(@)+sin^(2)39^(@)` is

The value of sin^(2)60^(@)-sin^(2)30^(@) is:

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

The value of sin^(2) 63^(@) + sin^(2) 27^(@) is

Find the value of sin^(2)5^(@)+ sin^(2)10^(@)+ sin^(2)15^(@)+* * * +sin^(2)90^(@) .

The value of sin^(2)22^(@) + sin^(2)68^(@) + cot^(2)30^(@) is

The value of sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+ . . . .+sin^(2)90^(@) is equal to

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

What is the value of sin^(2) 15^(@) + sin^(2) 20^(@) + sin^(2)25^(@) + ……… + sin^(2) 75^(@) ?

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