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9-70.
  1. Let s(x) = sin x. Homework Help ✎

    1. Find the exact value of the average rate of change of s(x) from x = to x = .

    2. Write the expression for the average rate of change of s(x) from x = to x = + h.

    3. Use the fact that sin(A + B) = sin A cos B + cos A sin B to show that the expression in part (b) can be written as .

Substitute values for the trigonometric expressions and simplify.