(i')cos48^(@)-sin42^(@)

Evalute (c ) cos48^(@)-sin42^(@)

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

Evaluate: (iii) cos 48^(@)-sin 42^(@)

Evaluate: i) sin48^(@)cos42^(@)+cos48^(@)sin42^(@) ii) cos72^(@)cos12^(@)+sin72^(@)sin12^(@) ii) cos72^(@)cos12^(@)+sin72^(@)sin12^(@) iii) (tan100^(@)+tan35^(@))/(1-tan100^(@)tan35^(@)) iv) sinAcos(A-B)-cosAsin(A-B)

Evaluate: i) sin48^(@)cos42^(@)+cos48^(@)sin42^(@) ii) cos72^(@)cos12^(@)+sin72^(@)sin12^(@) ii) cos72^(@)cos12^(@)+sin72^(@)sin12^(@) iii) (tan100^(@)+tan35^(@))/(1-tan100^(@)tan35^(@)) iv) sinAcos(A-B)-cosAsin(A-B)

((sin48^(@))/(cos42^(@)))+((cos48^(@))/(sin42^(@)))=2

(sin48^(@))/(cos42^(@))+(cos48^(@))/(sin42^(@))=2

Evaluate: cos48^(@)-sin42^(@)

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

Prove that : (i) sin42^(@)cos48^(@)+sin48^(@)cos42^(@)=1 (ii) cos70^(@)cos20^(@)-sin70^(@)sin20^(@)=0