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Geometry Level 3

sec ⁡ 2 A − tan ⁡ A ( sec ⁡ 2 A + tan ⁡ A ( sec ⁡ 2 A − tan ⁡ A ( … ) ) ) \sec^2 A - \tan A \left ( \sec^2 A + \tan A \left ( \sec^2 A - \tan A \left(\ldots \right) \right ) \right)

Simplify the expression above.

None of these choices 1 − tan ⁡ A 1 -\tan A 1 sec ⁡ A − tan ⁡ A \sec A - \tan A

Akshay Yadav by Akshay Yadav , 20, India

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1 solution

Akshay Yadav
Jun 18, 2015

A hint : Use identity 1 + (tanA)^2 =(secA)^2 to expand the given answer.

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Please provide an actual solution rather than a hint, as I don't believe this is the correct answer.

Marta Reece - 3 years ago

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