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cht tand: Cat B di TR4 Atacool
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cht tand: Cat B di TR4 Atacool
JEE/Engineering Exams
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finm tan ( A= ) cot ( B ) tan A i sale equal to cot ( (90-A) ) ( tan A=cot (90-A)=cot B ) ( frac{90-A=B}{A+B=90^{circ}} )
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