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cos^(2)48^(@)-sin^(2)48^(@)...

cos^(2)48^(@)-sin^(2)48^(@)

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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

Prove that: cos^(2)48^(@)-sin^(2)12^(@)=(sqrt(5)+1)/(8)

Prove that cos^(2)48^(@)-sin^(2)12^(@)=((sqrt5+1))/(8) .

Prove that: cos^(2)48^(@)-sin^(2)12^(@)=(sqrt(5)+1)/(8)

cos^(2)48^(@)-sin^(2)12^(0) is equal to

Find the value of (a) sin(pi)/(10).sin(13pi)/(10) (b) cos^(2)48^(@)-sin^(2) 12^(@)

cos^(2)48^(0)-sin^(2)12^(0) is