Question

1) If CosA - 3 / 3 then find the value of 4 + 4 tan² .

plz give full solution
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Answer 1

Explanation:

cosA=3/3

4+4tan²A

4(1+tan²A)

4(sec²A). [1+tan²A=sec²A]

4×1/cos²A. [sec²A=1/cos²A]

4×(3/3)²

4×9/9

=1 Ans.