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If cos A = 2/5, find the value of 4 + 4 tan2 A. |
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Answer» CosA =2/5=b/hP= √h²-b²=√5²-2²=√25-4=√21Now, tan²A=(√21)²/2²=21/4According to question,4+4×21/4=4+21=25So the right answer is 25....Hope it helps you a lot.... 25 25 |
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