A) \[1.5\,cm\]
B) \[1.6\,cm\]
C) \[1.8\,cm\]
D) \[2.1\,cm\]
Correct Answer: A
Solution :
\[DE\text{ }\!\!|\!\!\text{ }\!\!|\!\!\text{ }BC\] so, \[\Delta \,ADE\text{ }\tilde{\ }\text{ }\Delta ABC\] (According to Thale's theorem) \[\therefore \,\frac{AD}{DB}=\frac{AE}{EC}\Rightarrow \frac{2}{1}=\frac{3}{EC}\Rightarrow EC=\mathbf{1}\mathbf{.5}\,\mathbf{cm}\]You need to login to perform this action.
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