sec(3) = 1/cos(3)
Unfortunately, the question does not specify whether the argument (angle) is given in degrees or radians and so it is not possible to give a definitive answer.
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evaluation, evaluate.
The algebra section of the DAT is used to evaluate your ability to use numbers and show that you're capable of prblem solving.
a+3
If you're talking about middle-school algebra, the answer is yes.
No, algebra 1 is defiantly not the same as math course 3.