SOLUTION: The equation secA =x is equivalent to the equation. A=cos x A=1/cos x A=1/sec x A= sec^-1x

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Question 180645: The equation secA =x is equivalent to the equation.
A=cos x
A=1/cos x
A=1/sec x
A= sec^-1x
Answer by rapaljer(4551) About Me  (Show Source):
You can put this solution on YOUR website!
If secA =x, then to solve for A you must do the INVERSE operation to both sides in order to "undo" the sec. The inverse operation is called the "Arccos" or sometimes it is written "sec^-1". So the answer is

A = Arcsec x or A =sec^-1 x

R^2