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प्रश्न
Choose the correct alternative:
The vectors `vec"a" - vec"b", vec"b" - vec"c", vec"c" - vec"a"` are
पर्याय
parallel to each other
unit vectors
mutually perpendicular vectors
coplanar vectors
उत्तर
coplanar vectors
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If `vec"a", vec"b"` are unit vectors and q is the angle between them, show that
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