Below is the prove of the equation
because(sin/because+because/sin)=because(sin^2 +because^2/because sin)
As sin^2 +because^2=1
So because(1/sin because )=csc
Hence proved that left side is equal to right side.
because(sin/because+because/sin)=because(sin^2 +because^2/because sin)
As sin^2 +because^2=1
So because(1/sin because )=csc
Hence proved that left side is equal to right side.