If A 1 , A 2 , A 3 , ......, A n are the vertices of a regular plane polygon with n sides…

Mathematics · JEE Advanced · NTA Exams — Three Dimensional Geometry

1. \((1-\mathrm{n}) \overrightarrow{\mathrm{OA}}_{2} \times \overrightarrow{\mathrm{OA}}_{1}\)
2. \((n-1) \overrightarrow{\mathrm{OA}}_{2} \times \overrightarrow{\mathrm{OA}}_{1}\)
3. \(\mathrm{n} \overrightarrow{\mathrm{OA}}_{2} \times \overrightarrow{\mathrm{OA}}_{1}\)
4. none

Answer

(A) (1- n ) OA _ 2 OA _ 1

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