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" If "A+B=45^(@)," show that "(cot A-1)(...

" If "A+B=45^(@)," show that "(cot A-1)(cot B-1)=2

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1. If A+B=(pi)/(4), show that (cot A-1)(cot B-1)=2

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If A+B=45^(@), then (cot A-1)(cot B-1) is equal to

If A+B=45^@ then then (cot A- 1) (cot B- 1) is equal to :