cos C - cos D = 2 k then k is.... 1. sin (c+D/2).cos(C-D/2) 2. cos(C+D/2). sin(C-D/2) 3. cos (C+D/2). Cot (C-

Question

cos C - cos D = 2 k then k is....  1. sin (c+D/2).cos(C-D/2) 2. cos(C+D/2). sin(C-D/2) 3. cos (C+D/2). Cot (C-D/2) 4. Sin(C+D/2). sin (D-C/2)​

Faith · Answer

Answer:   hi gm   Step-by-step explanation:   your big bob is the best answer in my view

cos C – cos D = 2 k then k is….1. sin (c+D/2).cos(C-D/2)2. cos(C+D/2). sin(C-D/2)3. cos (C+D/2). Cot (C-