Diamond and angles

The internal angles in the diamond are 60° and 120°. Its side is 5 cm long. Find the area of a diamond.

Correct answer:

S =  21.6506 cm2

Step-by-step explanation:

a=5 cm α=60   sin α = 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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Most natural application of trigonometry and trigonometric functions is a calculation of the triangles. Common and less common calculations of different types of triangles offers our triangle calculator. Word trigonometry comes from Greek and literally means triangle calculation.

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