(get started array l Rightarrow sin Acos C + sin Ccos A = twocos Asin C Leftrightarrow sin Acos C = cos Asin C;(*)conclude array )T?t C?Công Ngh? L?p 12Công Ngh? L?p 11Công Ngh? L?p 10Công Ngh? L?p 9Công Ngh? L?p 8Công Ngh? L?p 7Công Ngh? L?p sixT?t C?Th? D?c L?p tenth? D?c L?p eleventh? D?c L?p 12Th? D?c L?p sixth? D?c L?p 7Th? D?c L?p 8Th?