

MCQOPTIONS
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1. |
For A = \(\left[ {\begin{array}{*{20}{c}} 1&{\tan x}\\ { - \tan x}&1 \end{array}} \right]\), the determinant of ATA-1 is: |
A. | sec2 x |
B. | cos 4x |
C. | 1 |
D. | 0 |
Answer» D. 0 | |