Diamond and angles

Find the area of a diamond with a side of 5 cm if you know that the internal angles in the diamond are 60° and 120°.

Correct answer:

S =  21.6506 cm2

Step-by-step explanation:

a=5 cm α=60  sinα=h:a  h=a sinα=a sin60 =5 sin60 =5 0.866025=4.33013 cm  S=a h=5 4.3301=21.6506 cm2



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