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

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

The value of cos^(2)48^(@)-sin^(2)12^(@) is ........... A) (sqrt5-1)/( 4) B) (sqrt5+1)/(8) C) (sqrt3-1)/(4) D) (sqrt3+1)/(2sqrt2)

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

Find the value of cos^2 48^@-sin^2 12^@

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

Find the value of cos48^(@)-sin42^(@) .

Find the value of cos42^(@)-sin48^(@) .

Find the value of (cos48^(@)-sin42^(@))

The value of cos^(-1)(cos12)-sin^(-1)(sin12) is

Find the value of (cos^(2)66^(@)-sin^(2)6^(@))(cos^(2)48^(@)-sin^(2)12^(@)) .