Question 925093
1) (3,1)+(-2,3)=(3-2,1+3)=(1,4)
Mag:{{{sqrt(1^2+4^2)=sqrt(17)}}}
Direction: {{{tan(theta)=4/1}}}
{{{theta=76}}}{{{degrees}}}
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2) (0.5)(3,1)-2(-2,3)=(3/2+4,1/2-6)=(11/2,-11/2)
Mag:{{{sqrt((11/2)^2+(11/2)^2)=(11/2)sqrt(2)}}}
Direction: {{{tan(theta)=-1}}}
{{{theta=335}}}{{{degrees}}}
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3) 3(3,1)=(9,3)
Mag:{{{sqrt((9)^2+(3)^2)=sqrt(90)=3sqrt(10)}}}
Direction: {{{tan(theta)=3/9}}}
{{{theta=18.4}}}{{{degrees}}}
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