
### Instruction: help me answer this question cot 4x (sin 5x + sin 3x) = cot x (sin 5x – sin 3x), think step by step
### Assistant: Consider LHS = cot 4x (sin 5x + sin 3x). Using the formula sin(A + B) = sinA cosB + cosA sinB, it can be written as 2 cos 4x cos x. Thus, LHS = RHS. , The answer is True
