NCERT Example 13.3 - Oscillations
Question: Which of the following represent SHM? (a) sin ?t ? cos ?t, (b) sin�?t.
Answer: (a) **SHM** with A = ?2, ?; (b) **periodic but not SHM** (has a constant term).
Full step-by-step NCERT solution with diagrams on Something by Zero.