1.

Which of the following expressions represent simple harmonic motion                                  [Roorkee 1999]

A.            \[x=A\sin (\omega \,t+\delta )\]                                    
B.            \[x=B\cos (\omega \,t+\varphi )\]
C.            \[x=A\tan (\omega \,t+\varphi )\]                                 
D.            \[x=A\sin \omega \,t\cos \omega \,t\]
Answer» B.            \[x=B\cos (\omega \,t+\varphi )\]


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