How do you do this? this is trig mixed sides

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

∆red ≅ ∆ by rule will give brainiest if possible

Math it's appreciated. (picture provided)