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9sec-A-9tan'A.कोहलकाजए।016. In the figure below, find the length of side AB |
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Answer» ANSWER We have, 9SEC 2 A−9tan 2 A Let r=9sec 2 A−9tan 2 A r=9(sec 2 A−tan 2 A) We know that sec 2 A−tan 2 A=1 Therefore, r=9×1=9 Hence, this is the answer. |
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