1. Vou carry a straight ladder into two corridors that intersect at a right angle. What...

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1. Vou carry a straight ladder into two corridors that intersect at a right angle. What is the maximum length L of the ladder that you can carry from ane corridor to the other one if their respective widths are a and b. [20) 2. Use anly one substitution u and show all the steps to find: (10) sin r dx 3. Use the substitution u = tan and show all the steps to evaluate: itx 2+ cos x 1. Vou carry a straight ladder into two corridors that intersect at a right angle. What is the maximum length L of the ladder that you can carry from ane corridor to the other one if their respective widths are a and b. [20) 2. Use anly one substitution u and show all the steps to find: (10) sin r dx 3. Use the substitution u = tan and show all the steps to evaluate: itx 2+ cos x

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