Question

( 1+tan^2 A ) coa^2 A is equal to

Answer 1

Answer:

1

Step-by-step explanation:

wrte tan in terms of sin and cos...u will get

Answer 2

Step-by-step explanation:

1+ tan ^2 A = sec^2A

=(sec^2A) cos^2A

=sec^2 A ×1/sec^2A ( cos ^A = 1 / sec^2 A)

= 1

so , the answer is 1

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