Math, asked by kiyonadriver, 1 year ago

prove the identities.... answer asap plz

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Answered by sandy1816

2

Step-by-step explanation:

(1+tanA)²+(1-tanA)²

=2(1+tan²A) [since,(a+b)²+(a-b)²=2(a²+b²)]

=2sec²A

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