In the Tour de France, a bicyclist races up two successive (straight) hills of different slope and
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(a) What will be the overall (net) angle from start to finish: (1) smaller than 5o, (2) between and 5o, or (3) greater than 7o?
(b) Calculate the actual overall (net) angle of rise experienced by this racer from start to finish, to corroborate your reasoning in part (a).
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