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(sin^(2)42^(@)-sin^(2)12^(@))" is "...

(sin^(2)42^(@)-sin^(2)12^(@))" is "

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Find the value of sin^(2)42^(@)-sin^(2)12^(@) .

cos^(2)48^(@)-sin^(2)12^(@)=?

The value of cos^(2)48^(@)-sin^(2)12^(@) is

The value of cos^(2)48^(@)-sin^(2)12^(@) is

The value of cos^(2)48^(@)-sin^(2)12^(@) is

The value of "cos"^(2)48^(@)-"sin"^(2)12^(@) is

I : sin^(2) 42^(@) - sin^(2) 12^(@)=(sqrt(5)+1)/(8) II : 8 cos^(3) 10^(@) - 6 cos10^(@)= sqrt(3)

The vlaue of sin ^(2) 12^(@) + sin ^(@) 21^(@) + sin ^(2) 39^(@) + sin ^(2) 48^(@) - sin ^(2) 9^(@) - sin ^(2) 18^(@) is "______"

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