X mer 2023.docx # se E3 p14.jpeg 3 wnloads/Math%201250%20%20Exam%203%20Summer%202023-1.pdf E D Santa Fe 80 F3 C X $ 10. (8 pts) If cos a = 4 R LL M Invitation: X Q F4 6 / 8 | % Z Launch M X 5 Jose E3 p11.jpeg F5 T 1 a) Use a sum or difference identity to find an exact value for sin(a + b) G 2 and sin b = 1, with a and b in the interval [0, 3 b) Use a sum or difference identity to find an exact value for cos(a - b) 100% + < 6 Desmos ^ C F6 MacBook Air Y H & 7 X Jose E3 p5.jpeg F7 U Grades fo X J * 00 8 DII F8 1 Microsoft X ( 9 K Jose E3 p6.jpeg F9 O O L G if cos a F10 P