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標題:
圓形fhfirjchdjfbsjcncjf?
Per. Of trip. 更新: ans the question in the photo
最佳解答:
YH = 1 ∠YAH = 60°/2 = 30° AH = 1 / (tan 30°) AB = 2 (AH) + YZ = 2 [1 / (tan 30°)] + 1 + 1 = 2 [1 + 1/(tan 30°)] The perimeter of the triangle = 3 (AB) = 3 * 2 [1 + 1/(tan 30°)] = 6 [1 + 1/(tan 30°)] ∴ D
其他解答:
圓形fhfirjchdjfbsjcncjf?
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發問:Per. Of trip. 更新: ans the question in the photo
最佳解答:
YH = 1 ∠YAH = 60°/2 = 30° AH = 1 / (tan 30°) AB = 2 (AH) + YZ = 2 [1 / (tan 30°)] + 1 + 1 = 2 [1 + 1/(tan 30°)] The perimeter of the triangle = 3 (AB) = 3 * 2 [1 + 1/(tan 30°)] = 6 [1 + 1/(tan 30°)] ∴ D
其他解答:
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