For the first question you might as well get a calculator draw an a triangle with valid angles and experiment with each option given, either way it is option D).
For the second part we are given the triangle with all three side lengths. We know that sin Q = opposite/hypotenuse cos Q= adj./hypotenuse, tan Q= opp./adj. So if Q = 30 degrees just pick the required side lengths and place them in the ratio required.
So, sin 30 = 1/2 , can you do the rest.
Finally it is option B) because if we consult the triangle diagram, when the angle is 60 degrees, the trigonometric ratio tan 60 = root 3 / 1 = root 3