Hey guys, was just wondering if the reciprocal of secx, was infact cosx.

For example, 1/secx

= 1 / 1/cosx

= 1 * cosx

= cosx

Also, is 2secx = 2/cosx or 1/2cosx?

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- Apr 12th 2008, 07:01 PMsanadoThe reciprocal of secx
Hey guys, was just wondering if the reciprocal of secx, was infact cosx.

For example, 1/secx

= 1 / 1/cosx

= 1 * cosx

= cosx

Also, is 2secx = 2/cosx or 1/2cosx? - Apr 12th 2008, 07:30 PMo_O
The former:

$\displaystyle 2 \sec x = 2 \cdot \frac{1}{\cos x} = \frac{2}{\cos x}$

Simply replace whenever you see the sec(x).