A. sec x tan x / sec x tan x
ExplanationStep 1: Recall the standard trigonometric derivative. Step 2: Derivative of sec x is sec x tan x. Step 3: Remember positive sign in derivative of sec.
Step 1: Standard trigonometric derivative याद करें। Step 2: sec x का derivative sec x tan x होता है। Step 3: sec derivative में positive sign याद रखें।
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