Part a,b,c,d please show work

7. (8pt) Given sina = $, 5

7. (8pt) Given sina 4 the following. a) cos o 2 b) cos {3 c) cos (o H- {3) d) sin (a + /3) and sin 2 rr < (3 < 2}, find the exact value of each of 5 7. (8pt) Given sina 4 the following. a) cos o 2 b) cos {3 c) cos (o H- {3) d) sin (a + /3) and sin 2 rr < (3 < 2}, find the exact value of each of 5