Melanie simplified the expression StartStartFraction StartFraction (cotangent (x)) Over (1 Over secant (x)) EndFraction EndEndFr
actionas shown below. Step 1: StartStartFraction StartFraction (cosine (x) Over sine (x)) EndFraction OverOver (cosine (x)) EndFraction EndEndFraction Step 2: StartFraction cosine (x) Over sine (x) EndFraction times StartFraction 1 Over cosine (x) EndFraction Step 3: StartFraction 1 Over sine (x) EndFraction Step 4: tangent (x) In which step did Melanie make the first error, and which expression should she have written in that step?
