Question
Vectors }\overrightarrow A,\overrightarrow B and }\overrightarrow C are such that }\overrightarrow A\cdot\overrightarrow B=0 and }\overrightarrow A\cdot\overrightarrow C=0. Then the vector parallel to }\overrightarrow A is (1) }\overline B and }\overrightarrow C (2) }\overrightarrow A×\overrightarrow B (3) }\overrightarrow B+\overrightarrow C (4) }\overrightarrow B×\overrightarrow C