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cos12^(@)-sin78^(@)...

cos12^(@)-sin78^(@)

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(cos12^(@)-sin12^(@))/(cos12^(@)+sin12^(@))+(sin147^(@))/(cos147^(@))=

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)

Evaluate cos 12^(@) -sin 78^(@)

Evaluate cos 12^(@) -sin 78^(@)

Evaluate cos 12^(@) -sin 78^(@)

Evaluate cos 12^(@) -sin 78^(@)

Evaluate cos 12^(@) -sin 78^(@)

Find the value of cos[12^(@)]-sin[78^(@)]

4 cos^(3)12^(@)-3sin78^(@)=