Multiple choice general knowledge tanx= 1/cosx 1/secx sinx/cosx cosx/sinx Reveal answer Fill a bubble to check yourself C Correct answer Explanation The tangent function is defined as tan x = sin x / cos x, which is the ratio of sine to cosine for the same angle. Options A and B are incorrect reciprocals, while D would be cotangent (cot x = cos x / sin x).