MCQ
Derivative of $\sec x^{o}$ is equal to :
- A$\sec x^{\circ} \tan x^{\circ}$
- B$\frac{\pi}{180} \sec x \tan x$
- ✓$\frac{\pi}{180} \sec x^{\circ} \tan x^{\circ}$
- D$\sec x \tan x$
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