Solve this problem using the Trigonometric identities (secA+1)(SecA-1)= tan^2A

Step-by-step explanation:

( secA + 1)( sec A - 1)

Using the expansion

( a + b)( a - b) = a² - b²

Expand the expression

We have

sec²A + secA - secA - 1

That's

sec² A - 1

From trigonometric identities

So we have the final answer as

As proven

Hope this helps you

Step-by-step explanation:

Here,

LHS

= (SecA+1)(secA -1)

Now, we have formula that:

as we got ,

This is equal to:

= RHS proved.

Hope it helps....

19

step-by-step explanation: