Whats the derivative of sin^2(theta)?

  1. but i need the derivative wrt time where theta depends on time
  2. jcsd
  3. Mark44

    Staff: Mentor

    Use the chain rule.
    $$\frac{d}{dt}sin^2(\theta) = \frac{d}{d\theta}sin^2(\theta)\cdot \frac{d\theta}{dt} = ? $$
  4. then it is simply 2sin(theta)cos(theta)*(theta dot)
  5. Mark44

    Staff: Mentor

    Yes, that's it.
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