Trigonometry
cotπ12\(\cot\]\frac{\pi}{12}\)cot12π
cot7π12\(\cot\]\frac{7\pi}{12}\)cot127π
cosπ12\(\cos\]\frac{\pi}{12}\)cos12π
csc7π12\(\csc\]\frac{7\pi}{12}\)csc127π