Question

3: Prove that sec A (1 - sin A)(sec A + tan A) = 1.​

Answer 1

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Answer 2

Step-by-step explanation:

RHS

Step 1 - secA(1-sinA)(secA+tanA)

Step 2 - (secA - secA. sinA)(secA+tanA)

Step 3 - (secA - tanA) (secA + tanA)

Step 4 -( sec^2A - tan^2A)

Step 5 - 1

Hence RHS =LHS