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वेक्टर `veca=2hati+3hatj+4hatk` तथा `vecb=3hati+4hatj+5hatk` है। इन वेक्टरो के बीच का कोण निकले।

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वेक्टर `veca=2hati+3hatj+4hatk` तथा `vecb=3hati+4hatj+5hatk` है। इन वेक्टरो के बीच का कोण निकले।
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`cos ^(-1)((38)/(sqrt1450))`
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