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If CosA=2/5,Then Find the value of 4+4tan²A |
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Answer» Answer: 25 Explanation: cosA=2/5 so, secA=5/2 by squaring sec^2A=25/4 1+tan^2A=sec^2A (this is an IDENTITY MAY you have LEARNT) tan^2A=sec^2A-1 =21/4 putting in QUESTION We get 4+21 =25 ANS |
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