Question 571003
find triangle
A= pi/3
b= 2 m
c=4m
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Assuming side a is opposite angle A, etc.
{{{a^2 = b^2 + c^2 - 2*b*c*cos(A))}}}
{{{a^2 = 4 + 16 - 16*0.5 = 12}}}
{{{a = 2sqrt(3)}}} meters
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Use the sine law to find another angle
sin(A)/a = sin(B)/b
sin(B) = b*sin(A)/a
B = pi/6
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C = pi - (A + B)
C = pi/2