सिद्ध करें कि `cos 48^(@) . cos 23^(@) . cosec 42^(@) . cosec 67^(@) = 1`

cosec 48^(@) + cosec 96^(@) + cosec 192^(@) + cosec 384^(@)=

cosec 48^(@) + cosec 96^(@) + cosec 192^(@) + cosec 384^(@)=

cos48^(@)cos23^(@)cos ec42^(@)cos ec67^(@)=1

cos7^(@)cos23^(@)cos45^(@)cosec83^(@)cosec67^(@)=?

cosec 23^@ - sec 67^@

Show that: sin 42^(@)sec 48^(@)+cos 42^(@)cosec 48^(@)=2

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

Prove that : "cosec "65^(@)cos25^(@)+"cosec20"^(@)cos70^(@)=2

Prove that : "cosec "65^(@)cos25^(@)+"cosec20"^(@)cos70^(@)=2

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