" Civ "cos48-sin42=

Evaluate the following: ( i ) ((sin49o)/(cos410))^(2)+((cos410)/(sin49o))^(2) (ii) cos48o-sin42o

Evaluate : cos48^@-sin42^@ .

Evaluate : cos48^@-sin42^@ .

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

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

Evaluate : cos 48^@-sin 42^@

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

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