Rhombus

One angle of a rhombus is 136° and the shorter diagonal is 8 cm long. Find the length of the longer diagonal and the side of the rhombus.

Correct result:

u =  19.8007 cm
a =  10.6779 cm

Solution:

v=8 B=136 tanB/2=u/v u=v tan(B/2)=8 tan(136/2)=19.8007 cm
a=(u/2)2+(v/2)2=(19.8007/2)2+(8/2)2=10.6779 cm

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