The rate of change of a shadow

Author:ekazakevich, Mark Willis, Doug Kuhlmann

A man running from a street lamp.

A street lamp is 8m high. A man of height 1.6m walks along the street away from the lamp at a steady rate of 1 m/s. At what rate is the length of his shadow changing?

New Resources

Isosceles Right Triangle
Absolute Value Functions f(x)=a |x - h| + k
挂谷问题——三尖瓣形
Quadrant Illustrator
Pythagorean Template: Integer Legs

Discover Resources

The unit circle and trigonometric functions
opg 4 b) s.66
segments
Optimization With Walk And Swim
Half Equilateral Triangle

Discover Topics

Exponent
Random Experiments
Limits
Sequences and Series
Fractal Geometry