Solution:

To Prove:

Formula Used:

Proof:

Let (2)

Substituting (2) in (1),

From

Therefore, LHS = RHS

Hence proved.

Prove that:

Prove that:

Solution:

To Prove:

Formula Used:

Proof:

Let (2)

Substituting (2) in (1),

From

Therefore, LHS = RHS

Hence proved.