Practice problem
Compute arctan(1/3)+arctan(1/2)+arctan(1)\arctan(1/3) + \arctan(1/2) + \arctan(1)arctan(1/3)+arctan(1/2)+arctan(1).
π2\frac{\pi}{2}2π
π3\frac{\pi}{3}3π
π\piπ
Hint
Type a concept, like “slope” or “photosynthesis”.
