- #1

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## Homework Statement

## Homework Equations

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## The Attempt at a Solution

Confused with

**(d)**a little.

Rocket explodes at ##h=3.85262 ## miles

## -16t^2+1400\sin(\alpha)t=3.852624*5280##

## \alpha=\arcsin\left(\dfrac{3.852624*5280+16t^2}{1400t}\right) ##

But what do I do from here? Looks a bit complicated.