" (iii) "cos48^(@)-sin42^(@)quad " (iv) "cosec31^(@)" ."

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

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

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

cos 48^@ - sin 42 ^@ = ?

Evaluate : (i) (sin18^@)/(cos72^@) (ii) (tan26^@)/(cot64^@) (iii) cos48^@-sin42^@ (iv) c o s e c 31^@sec59^@

Without using trigonometric tables, evaluate : (i) cos 48^@-sin42^@ (ii) cosec31^@-sec59^@ (iii) cot 34^@-tan56^@ (iv) cos^2 13^@-sin^2 77^@

Evaluate:(iii) Cos48^@-Sin42^@

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

Evaluate : cos48^@-sin42^@ .

Evaluate : cos48^@-sin42^@ .