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If cos A=2/5, find the value of 4+4tan²A. |
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Answer» Firstly we know that the ratio of cos A that B/HSo let base equal to 2x and hypo. Equal to 5x.Now apply Pythagoras theorem.And find perpendicular from there.OKNow we know that the ratio of tan A i.e.P/B.Put the value of tan A and get the answer. How did you find that 25 |
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