How would I answer the three following questions?

Question 15 (1 point) Listen The solution(s) to the following equation is (are): 8 sin2x - 10 sin x = 7 for 0 s x $ 2x O al 0, and 271 O b) 7 7 6 O c) 7TT and 117 6 O d) ? and - 2 Question 8 (1 point) Find the exact value of each angle given. Listen sin 750 The solution(s) to the following equation is (are): 2cos x - cos x - 1 = 0 for 0 s x $ 271 O a) 1+V3 V2 O a) 0 and 27T Ob) 1-v3 V2 O b) ( 7 271 . 3 3 2 Od Itva O c) 27T 47T 2V/2 and 3 3 O d) 1-V3 O d) of 271 471 21/2