मान ज्ञात कीजिए| ` sin 48^(@) ," " (ii) tan 1215^(@) " " (iii) sec 390^(@)" " cosec ( - 2025) ^@`

Evaluate : (i) tan42^(@)-cot48^(@) (ii) sec36^(@)-"cosec"54^(@)

Evaluate : (i) tan42^(@)-cot48^(@) (ii) sec36^(@)-"cosec"54^(@)

Find the values of (i) " sin "405^(@) " " (ii) " sec " (-1470^(@)) " "(iii) " tan " (-300^(@)) (iv) " cot " (585^(@)) " "(v) " cosec " (-750^(@)) " "(vi) " cos " (-2220^(@))

Show that : (i) tan 10^(@) tan 15^(@) tan 75^(@) tan 80^(@) = 1 (ii) sin 42^(@) sec 48^(@) + cos 42^(@) "cosec 48"^(@) = 2

Prove that : sin A (1 + tan A) + cos A (1 + cot A) = sec A + cosec A.

sin A (1 + tan A) + cos A (1 + cot A) = sec A + cosec A .

( cosec A - sin A ) (sec A - cos A ) = ( 1 ) /( tan A + cot A )

Prove that : cos A (1 + cot A) + sin A (1 + tan A) = sec A + cosec A

Evaluate : (i) cosec 82^(@)-sec8^(@) (ii) sec 70^(@)sin 20^(@)+cos 20^(@)cosec 70^(@)