document.write( "Question 1162250: The angle between the vectors (1, 0, −1, 3) and (1, √ 3, 3, −3) in R^4 is aπ. Find a. \n" ); document.write( "

Algebra.Com's Answer #786026 by ikleyn(52794) $\"\"$ $\"About$

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document.write( "cos(a) = ,\r\n" );
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document.write( "where x and y are two given vectors in 4D-space;  \r\n" );
document.write( "the numerator of the formula is their scalar product and  |x|  and  |y|  are the lengths of these 4D vectors.\r\n" );
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