- #1
Maxwellkid
- 69
- 0
why is there a lack of accuracy in this subsitution?
[tex] \frac{sin\phi}{cos\phi} = tan\phi [/tex]
[tex] \frac{sin\phi}{cos\phi} = tan\phi [/tex]
Maxwellkid said:why is there a lack of accuracy in this subsitution?
Tac-Tics said:This reminds me of a problem I had back when I was interested in programming games. Given an object at position (x, y) with a velocity (dx, dy), what is the angle the object is moving at with relation to the x-axis?
What you find out is that arc tangent isn't quite what you need. Because tangent is periodic with a period of pi, the arc tangent function won't distinguish between the correct direction and the direction exactly opposite it.
Because of this, most computer languages implement a function called atan2. By taking dx and dy as two separate parameters (as opposed to taking their ration, dy/dx as the parameter), atan2 can distinguish between the two cases and can provide you the correct angle of motion for your object.
"Loss of information in tangents" refers to the phenomenon where relevant information or details are omitted or not fully represented in a discussion or argument. This can occur when tangents, or off-topic discussions, are introduced and the main point or focus of the conversation is lost.
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In scientific debates, loss of information in tangents can be detrimental as it can lead to misunderstandings, misinterpretations, and a lack of consensus. This can delay progress and hinder the resolution of conflicting ideas and theories.
To effectively manage tangents without losing important information, scientists can practice active listening and redirect the conversation back to the main topic. They can also make use of note-taking and summarizing techniques to ensure that all relevant information is captured and addressed during discussions.