A sine bar has a length of 250 mm, each roller has a diameter

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A sine bar has a length of 250 mm, each roller has a diameter of 20 mm, during taper angle measurement of a component, the height from the surface plate to the centre of a roller is 100 mm. The calculated taper angle (in degrees) is

1. 21.1
2. 22.8
3. 23.6
4. 68.9

Correct Option: A

θ =	90
	250

θ = 21.1°