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1. |
In the given curve of the above question, find the value of angle \[{{i}_{1}}\] in degrees. |
A. | \[{{40}^{o}}\] |
B. | \[{{60}^{o}}\] |
C. | \[{{70}^{o}}\] |
D. | \[{{90}^{o}}\] |
Answer» E. | |