I would look to the all-mighty triangle for this one. SOHCAHTOA where: sin(x) = opp/hyp cos(x) = adj/hyp tan(x) = opp/adj
If sin(x) = 1/2 ... that means that opposite = 1 and hypotenuse = 2. Using the Pythagorean Theorem, we find that the adjacent side equals the square root of 3. Given this information, we can conclude that: cos(x) = sqrt(3)/2 tan(x) = 1/sqrt(3)