document.write( "Question 1100445: if A has a magnitude of 55.9 an B has a magnitude of 42.3 find the magnitude R of the resultant and the angle that resultant makes with vector B given the angle with A is 55.5 degrees \n" ); document.write( "
Algebra.Com's Answer #715968 by jimbols(1)\"\" \"About 
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We can use force triangle in this situation. \r
\n" ); document.write( "\n" ); document.write( "Using Cosine Law,
\n" ); document.write( " R² = 55.9² + 42.3² - 2(55.9)(42.3)cos(124.5)
\n" ); document.write( " R = 87.14\r
\n" ); document.write( "\n" ); document.write( "Using Sine Law,
\n" ); document.write( " 87.14/sin(124.5) = 55.9/sin(Ɵ)
\n" ); document.write( " Ɵ; = 31.916 degrees
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