Angles

Determine the interior angles of a rhombus with area 319.1 cm2 and perimeter 72 cm.

Correct result:

α =  80 °
β =  100 °
γ =  80 °
δ =  100 °

Solution:

a=72/4=18 cm S=a2sinα  α=arcsin(319.1182)=80
β=180α=100
γ=α=80
δ=β=100



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