Imagine that you find yourself standing in front of a large billboard. The bottom and top edges of the billboard are located 5 5 and 15 ft 15~\text{ft} above your eye level, respectively. As you walk directly away from where the billboard is mounted at a speed of 4 ft/s 4~\text{ft/s} , you continually have the billboard in your line of vision. Determine how quickly the subtended angle θ \theta by the billboard from your eyes is changing when you are located 25 ft 25~\text{ft} away from where the billboard is mounted. Assume the ground you are walking on is flat.

− 44 1105 rad/s -\frac{44}{1105}~\text{rad}\text{/}\text{s} − 1105 44 rad / s

− 22 1105 rad/s -\frac{22}{1105}~\text{rad/s}

− 27 551 rad/s -\frac{27}{551}~\text{rad/s}

− 9 551 rad/s -\frac{9}{551}~\text{rad/s}

Imagine that you find yourself standing in front o...

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