As shown in the Fig.2. Given △ABC with BC=4 and ci
As shown in the Fig.2. Given △ABC with BC=4 and circle A with radius 2. BC is tangent to circle A at D. The circle A intersects with AB and AC at point E and F, respectively ∠EDF=140°. Then the area of the shaded portion is____.(英汉小词典:tangent相切的)
参考解答
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2024-03-19 06:04:46
参考答案4-8/9π
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