the angle between two vectors is A= 3i+ 4j + 5 k and B= 3i + 4j - 5 k will be what
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-40i+30j is answer of this equation
angananirosha:
how
the formula is A×B=i{AyBz-AzBy}-j{AxBz-AzBx}+k{AxBy-AyBx}
so put the values of this equation and solve it
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