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If the length of a chain line along a slope of θ° is l, the required slope correction is. | |
A. | 2l cos2 θ/2 [Wrong Answer] |
B. | 2l sin2 θ/2 [Correct Answer] |
C. | l tan2 θ/2 [Wrong Answer] |
D. | l cos2 θ/2. [Wrong Answer] |