The pressure angle of two gears in a mesh is φ = 20°. The gear ratio is 3 and the number of teeth on the pinion is 20. The module is given to be 8 mm. The addendum is one module. Find the path of contact of these two gears.

A) 21.324 mm B) 12.543 mm
C) 56.343 mm D) 39.458 mm

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