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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The former: $\displaystyle 2 \sec x = 2 \cdot \frac{1}{\cos x} = \frac{2}{\cos x}$ Simply replace whenever you see the sec(x).
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