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` sin 48^(@)sec 42^(@) +cos 48^(@)cosec 42^(@)=2`

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

sin42^(@)sec48^(@)+cos42^(@)cos ec48^(@)=2

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

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

Find the value of sin 48^(@) sec 42^(@)+cos48^(@) "cosec"42^(@).

(sin48^(@))/(cos42^(@))+(cos48^(@))/(sin42^(@))=2

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

Prove that: sin48^@sec42^@+cos48^@\ cos e c\ 42^@=2

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

((sin48^(@))/(cos42^(@)))+((cos48^(@))/(sin42^(@)))=2