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If sinA=4/5 then tan2A will be?? |
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Answer» Answer: 24/7 is CORRECT ans Explanation: if SinA=4/5 then COS A=3/5 (by TRIGONOMETRY identities) now TAN 2A=Tan A + Tan A/1-Tan A.Tan A now Tan A=Sin. A/ Cos A=4/3 so tan 2A= (4/3)×2/1-(4/3)^2 =(8/3)/ (-7/9) = -24/7
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