Question

1.Zero value of p/q x-r is
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Answer 1

Answer:

We are given that P × Q = 0, and Q × P = 0. From vector algebra we know that magnitude of P× Q is

| P × Q| = |P|×|Q|× Sin ß, where ß is the angle between P and Q.

P × Q = 0 ==> |P ×Q | = 0; ==> |P|× |Q| × Sin ß =0

This implies either;

P=0, or,

Q= 0, or

Both P, Q= 0, or

Angle ß= 0° or 180° . That is vectors P and Q are parallel or anti-parallel to each other.

Answer 2

Step-by-step explanation:

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