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Q2 of 303 Page 5

Prove the following results:

Let and

⇒ and

where

Now, LHS is reduced to : tan(x+y)

⇒ ..eq(i)

As where

⇒

⇒

Similarly,

where

⇒

and

⇒ and

Putting these values in eq(i)

⇒

⇒

= RHS

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