`L.H.S. = (cosec(90^@+theta)+cot(450^@+theta))/(cosec(90^@-theta)+tan(180^@-theta))+(tan(180^@+theta)+sec(180^@-theta))/(tan(360^@+theta)-sec(-theta)`
`=(cosec(90^@+theta)+cot(360^@+90^@+theta))/(cosec(90^@-theta)+tan(180^@-theta))+(tan(180^@+theta)+sec(180^@-theta))/(tan(360^@+theta)-sec(theta)`
`=(cosec(90^@+theta)+cot(90^@+theta))/(cosec(90^@-theta)+tan(180^@-theta))+(tan(180^@+theta)+sec(180^@-theta))/(tan(360^@+theta)-sec(theta)`
`=(sec(theta)-tan(theta))/(sec(theta)-tan(theta))+(tan(theta)-sec(theta))/(tan(theta)-sec(theta)`
`1+1 = 2= R.H.S.`