" (iii) "cos48^(@)-sin42

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

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

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

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

Evaluate : (i) (sin18o)/(cos72o) (ii) (tan26o)/(cot64o) (iii) cos48o-sin42o (iv) "c o s e c 31osec""""59o"

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

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

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

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

Find the value of (a) sin(pi)/(10).sin(13pi)/(10) (b) cos^(2)48^(@)-sin^(2) 12^(@)