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ΔABC is an equilateral triangle in which D, E and F are the points on sides BC, AC and AB, respectively, such that AD ⊥ BC, BE ⊥ AC and CF ⊥ AB. Which of the following is true?
5Q:
ΔABC is an equilateral triangle in which D, E and F are the points on sides BC, AC and AB, respectively, such that AD ⊥ BC, BE ⊥ AC and CF ⊥ AB. Which of the following is true?
- 1$$ {4 AC^{2}=5{BE}^{2}}$$false
- 2$$ {3 AC^{2}=4{BE}^{2}}$$true
- 3$$ {2 AB^{2}=3{AD}^{2}}$$false
- 4$$ {7 AB^{2}=9{AD}^{2}}$$false
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