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cos48^(@)-sin42^(@)...

cos48^(@)-sin42^(@)

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

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

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

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

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

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

sin48^(@)sec42^(@)+cos48^(@)csc42^(@)=

Evaluate : cos 48^@-sin 42^@

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

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