Let be three unit vectors, out of which vectors and are non-parallel. If and are the angles which vector makes with vectors and respectively and , then | − | is equal to: |
|||

(a) |
60° |
(b) |
30° |

(c) |
90° |
(d) |
45° |

Let be three unit vectors, out of which vectors and are non-parallel. If and are the angles which vector makes with vectors and respectively and , then | − | is equal to: |
|||

(a) |
60° |
(b) |
30° |

(c) |
90° |
(d) |
45° |

1 Answer - 5876 Votes

3537

( –

are linearly independent

∴ =0

(All given vectors are unit vectors)

∴ = 60°^{ }& = 90°

∴ | | = 30°