Circumscribed 63824

In a regular decagon, the diameter of the circumscribed circle measures 10 cm. Determine the radius of the circle inscribed in this triangle.

Correct answer:

r =  9.5106 cm

Step-by-step explanation:

n=10 R=10 cm  Φ=2 n360=2 10360=18   cosΦ=r:R=9.5106:10=0=0:1  r=R cosΦ=R cos18° =10 cos18° =10 0.951057=9.511=9.5106 cm

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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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