Math, asked by acharyaudesh, 7 months ago

prove that(1 + tan a)^2 +(1 -tan a)^2=2 sec^2 a​

Answers

Answered by sandy1816
4

Step-by-step explanation:

(1+tana)²+(1-tana)²

=2(1+tan²a)

=2sec²a

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