document.write( "Question 1173622: u = −10i − 5j
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\n" ); document.write( "\n" ); document.write( "Find the degree measure of the angle 𝜃 between the vectors. (Round your answer to two decimal places.)\r
\n" ); document.write( "\n" ); document.write( "𝜃 = _____° \n" ); document.write( "

Algebra.Com's Answer #798899 by math_helper(2461) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "The dot product of two vectors is defined as\r
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document.write( "u·v = |u||v|cos(θ)\r
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document.write( "and the dot product also happens to be the sum of products of corresponding components:\r
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document.write( "u·v =   \r
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document.write( "So we have all that is needed to solve for θ:\r
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document.write( "|u| =  =  = 
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document.write( "|v| =  =  = \r
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document.write( "and
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document.write( " =  = \r
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document.write( "Putting it all together:\r
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document.write( "   = 
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document.write( "   = 
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document.write( "   cos(θ) =      \r
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document.write( "       θ =  = 
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