Question

y and z are unit vector and are perpendicular to each other then which of the following is!
correct?
(a) x.x = yy=z.z= 1
(b) x.y = y.z=zx=0
C) ZX=ZAy=1
(d) x.x = y.z=z.z = 1
(e) Both A & B
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Answer 1

Answer:

Both a and b

Explanation:

option e is correct