Find the value of `(sin 50^(@))/(cos40^(@))+("cosec"40^(@))/(sec 50^(@))-4cos 50^(@) " cosec"40^(@).`

Without using trigonometric tables,find the value of ((sin50^(@))/(cos40^(@)))+((cos ec40^(@))/(sec50^(@)))-4cos50^(@)cos ec40^(@)

Solve (sin40^(@))/(cos50^(@))+(csc40^(@))/(sec50^(@))

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

Find the value of sin50^(@)-cos40^(@) .

Find the value of sin50^(@)-cos40^(@) .

Find the value of x. x% of 50 = 40

Find the value of (sin 25^@)/(sec65^@)+(cos 25^@)/(cosec 65^@) .

Find the exact value of cosec"10"^(@)+"cosec"50^(@)-"cosec"70^(@)

Find the value of : 50-(-40)-(-2)