## Discussion Forum

Que. | Let V1 = 2I – J + K and V2 = I + J – K, then the angle between V1 & V2 and a vector perpendicular to both V1 & V2 shall be : |

a. | 90 degrees and (–2I + J – 3K) |

b. | 60 degrees and (2I + J + 3K) |

c. | 90 degrees and (2I + J – 3K) |

d. | 90 degrees and (–2I – J + 3K) |

Answer:90 degrees and (–2I – J + 3K) |