sin? ( 75 0) Sin (450 ) cos* (360) sin? (450 + 30) Sin ( 45 ) (053/ 20) [ sin (459) cos ( 30) + (os 145 ) sin(30. Sin( 45

Find the exact value of the following:

a) 



These are my attempts. Please show all work.

• Attachment 1
• Attachment 2

sin? ( 75 0)Sin (450 ) cos* (360)sin? (450 + 30")Sin ( 45" ) (053/ 20)[ sin (459) cos ( 30") + (os 145" ) sin(30.Sin( 45 " ) cos ? ( 309)VZV32(E)7(272Z2174-72324-/2234 V2627/2