The easy one first Tan A = opp / adj = 24/ 36 = 2/3 so it is eather answer A or D
Now find the hypotenuse length by pythagorean theorem
242 + 362 = h2
h = sqrt 1872 = 12 sqrt 13
Sin A = opp/ hyp = 24 / (12 sqrt13) = 2 / sqrt13 = 2 sqrt13/13 so the answer is A
as a check, see if you can calculate the cosine A = adj/hyp to see if it matches the answer !