A) \[\frac{(AB)(AC)}{AB+AC}\]
B) \[\frac{1}{AB}+\frac{1}{AC}\]
C) \[\frac{1}{AD}\]
D) \[\frac{A{{B}^{2}}+A{{C}^{2}}}{(A{{B}^{2}}){{(AC)}^{2}}}\]
Correct Answer: C
Solution :
Let \[|BC|=l\] In \[\Delta ABC,\]You need to login to perform this action.
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