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1. |
If Cos(y)=Cos(-1) (y) then? |
A. | (1 y<sup>2</sup>)(1 Cos<sup>2</sup> (y))=1 |
B. | (1 y<sup>2</sup>)(1 Cos(y))=1 |
C. | (1 y<sup>2</sup>)(1 Sin<sup>2</sup> (y))=1 |
D. | (1 y<sup>2</sup>)(1 Sin(y))=1 |
Answer» B. (1 y<sup>2</sup>)(1 Cos(y))=1 | |