Two opposite sides of a parallelogram each have a length of #18 #. If one corner of the parallelogram has an angle of #( pi)/3 # and the parallelogram's area is #42 #, how long are the other two sides?

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Answer 1 · 2017-06-12T12:25:44

The lengths of the #2# other sides are #=2.69#

The area of a parallelogram is

#A=a b sintheta#

The sides are

#a=18#

#b=A/(asintheta)#

#=42/(18sin(1/3pi))#

#=2.69#