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

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^(@)sec42^(@)+cos48^(@)csc42^(@)=

Evaluate the following: (i) ((sin49^@)/(cos41^@))^2+((cos41^@)/(sin49^@))^2 (ii) cos48^@-sin42^@

Prove that: sin48^@sec42^@+cos48^@\ cos e c\ 42^@=2

cos 48^@ - sin 42 ^@ = ?

The value of cos48^(@)cos42^(2)-sin48^(@)sin42^(@) is:

Evaluate cos 48^(@) cos 42^(@) - sin48^(@) sin 42^(@)

Evaluate cos 48^(@) cos 42^(@) - sin48^(@) sin 42^(@)

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