Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home. what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point
could be used as a reference angle for .
Given the trigonometric expression
In order to find the reference angle for , find an angle that is positive, less than , and coterminal with
Subtract from .
The resulting angle of is positive, less than , and coterminal with .
Since the angle is in the fourth quadrant, subtract
Therefore, could be used as a reference angle for .
Keywords: reference angle
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