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三角函数的综合应用 温州中学 赵曙

三角函数的综合应用 温州中学 赵曙. 问题三： 已知扇形 OAB 的半径为 1 ，圆心角为 ， P 为弧 AB 上的动点 . (1) 求四边形 OAPB 的面积的最大值 ; (2) 若 PM⊥OB, PN⊥OA, 请问 : 线段 MN 的 长度是否为定值，若是求其定值， 若不是，求其范围.

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三角函数的综合应用 温州中学 赵曙

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  1. 三角函数的综合应用 温州中学 赵曙

  2. 问题三： 已知扇形OAB的半径为1，圆心角为 ， P为弧AB上的动点. (1)求四边形OAPB的面积的最大值; (2)若PM⊥OB, PN⊥OA,请问:线段MN的 长度是否为定值，若是求其定值， 若不是，求其范围.

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