Plzzz do the above question
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By directly applying the formulas:
(Sec a + cos a)(sec a - cos a) = sec^2 a - cos ^2 a
= (1+tan^2a) - (1 - sin^2a)
= 1 + tan^2a - 1 + sin^2 a
= tan^2a + sin^2 a
(Sec a + cos a)(sec a - cos a) = sec^2 a - cos ^2 a
= (1+tan^2a) - (1 - sin^2a)
= 1 + tan^2a - 1 + sin^2 a
= tan^2a + sin^2 a
Yash9041:
Thnks a lot brother
My Pleasure..
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