Question: In the What If? Section of Example 4.7, it was claimed that the maximum range of a ski-jumper occurs for a launch angle ' given

In the What If? Section of Example 4.7, it was claimed that the maximum range of a ski-jumper occurs for a launch angle ' given by
Where is the angle that the hill makes with the horizontal in Figure 4.16. Prove this claim by deriving the equation above

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