Work is minimized when the angle between the force applied and the direction of motion is 90 degrees (or π/2 radians). At this angle, the force does not contribute to the displacement in the direction of the force, resulting in zero work done. In general, as the angle increases from 0 to 90 degrees, the work done decreases, reaching its minimum at 90 degrees.
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The minimum angle of a regular polygon would be 60 degrees.
There is no minimum value for the cosecant function.
45 degrees, which would be the interior angle of a equilateral triangle
It is: 180-interior angle = exterior angle
When the angle is 90 degrees.