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प्रश्न
Choose the correct alternative:
If `|vec"a"| = 13, |vec"b"| = 5` and `vec"a" * vec"b"` = 60° then `|vec"a" xx vec"b"|` is
विकल्प
15
35
45
25
उत्तर
25
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संबंधित प्रश्न
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