Trong tam giác \(ABC,\) nếu có \({a^2} = b.c\) thì:
A.\(\frac{1}{{h_a^2}} = \frac{1}{{{h_b}}} + \frac{1}{{{h_c}}}\)
B.\(\frac{1}{{h_a^2}} = \frac{2}{{{h_b}}} + \frac{2}{{{h_c}}}\)
C.\(\frac{1}{{h_a^2}} = \frac{1}{{{h_b}}} - \frac{1}{{{h_c}}}\)
D.\(h_a^2 = {h_b}.{h_c}\)
A.\(\frac{1}{{h_a^2}} = \frac{1}{{{h_b}}} + \frac{1}{{{h_c}}}\)
B.\(\frac{1}{{h_a^2}} = \frac{2}{{{h_b}}} + \frac{2}{{{h_c}}}\)
C.\(\frac{1}{{h_a^2}} = \frac{1}{{{h_b}}} - \frac{1}{{{h_c}}}\)
D.\(h_a^2 = {h_b}.{h_c}\)
Loga
Hóa Học lớp 12
