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[" If "A=60^(@)" and "B=30^(@)" then pro...

[" If "A=60^(@)" and "B=30^(@)" then prove that "],[cot(A-B)=(cot A cot B+1)/(cot B-cot A)]

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cot(A-B)=(cot A cot B+1)/(cot A-cot B)

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