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Questions tagged [angle]

A shape, formed by two lines or rays diverging from a common point (the vertex).

Angle is also used to designate the measure of an angle or of a rotation. This measure is the ratio of the length of a circular arc by its radius. In the case of an angle (figure), the arc is centered at the vertex and delimited by the sides. In the case of a rotation, the arc is centered at the center of the rotation and delimited by any point and its image by the rotation.

Source: mathopenref wikipedia

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How to calculate the signed angle between 2 vectors with a given axis normal in 3D?

Suppose if I have two vectors, A and B, and an axis (normalized vector), how do I find the angle between A and B such that the angle difference between A after rotation(axis, angle) and B wrt to the given axis is 0. A doesnt have to be equal to B…
user80667
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c++ calculate all the angles between two angles

I have a set of previously defined float values(a set of angles) I need a function which takes two angles as input and returns all the angles between them. The user first enters a set of angles in float and then the user can enter any two angles(my…
abbas
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What unit does Swift use for angles?

Am am writing some code to draw circular charts, and while reading some example code, became confused about how angles are measured in Swift. In the first post I read, Swift seems to use radians: CGContextAddArc(context, origo.x, origo.y, radius,…
user31415
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Calculating the angle and converting it to degrees

I am having trouble getting an accurate angle measurement and converting it to degrees. I first calculated the distance with: double distance = Math.Sqrt(deltax + deltay); Console.WriteLine("Distance :" + Math.Round(distance,…
Ashley Lauren
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Calculating Cos inverse to find angle degree

So, right now I am trying to calculate the angles of a right triangle using the inverse of Cosine. However, I don't really know how to do it. I know the equation, just not how to convert into code. The equation would be:: Cos-1(A/C); However, that…
B Whitehead
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Slanted Div Hover Troubles

I've created a Slanted Div, however I ran into problem I cannot solve, I've googled this but did not find any answers. body { background: black; } #slantedwrapper { overflow: hidden; margin-left: 50px; } #slanted { display:…
kenwin
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Python (Length input to draw star with a center point of 0,0)

I have some code were the users input the length they want their star to be and then it draws out the star. What I am trying to accomplish here, is that every-time they make their input not only that it draws the star but it also keeps it centered…
Kenneth Luiggi
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How do I generate a `x,y` co-ordinates that is always 90 degrees either left or to the right of the current position of a UIImage?

How do I generate a x,y co-ordinates that is always 90 degrees either left or to the right of the current position of a UIImage? I have a location which is a random x, y in generateRandomLocation. I require to generate a new x,y which is 90 degrees…
Atilla Jax
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How to get angle based on trigonometric function in C++

I know I can get given angle's trigonometric functions by math.h. I was wondering, if it can be done in reversed direction. Let's say there's a vector with two coordinates. I have its x and y values, so tangent can be easily calculated float…
Maciej Dziuban
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How i calculate the ball angle after hitting the bat?

I am developing an app for cricket gaming. User can bat through gestures. But did not know which algorithm i can use to calculate ball angle after hitting the bat. Like when user play shot on off side, which cricketing area it will select for ball…
Majaz Elahi
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How to find The Rotation of a 3d Triangle

I need a function so that, when given the Vector3 for a, b and c, will give me a new Vector3, the rotation of the Triangle. Pretty much, for point d, if I want to move it out, adjacent to the triangle, I just have to multiply the distance I want to…
Diode II
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calculate angle from vector to coord

I am breaking my head trying to find an appropriate formula to calculate a what sounds to be an easy task but in practice is a big mathematical headache. I want to find out the offset it needs to turn my vector's angle (X, Y, Angle) to face a coord…
Stavm
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convert string degrees into decimal units

Given a string "3°5'2''" I need to convert it to a decimal representation.
user3708201
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Java game programming - angles

I am trying to learn game programming and about angles. I'm trying to make a game in which you kick a ball, and when it hits a wall it should bounce away from the wall at a certain angle, depending on the speed of the ball when it hits. After trying…
dHoja
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Rotating point by angle

I know that the theory of rotating a point by an angle is on the internet a million times, but I don't get my code to work properly. I have a line with 2 points, when you click on 1 of the 2 points, you will rotate the point relative to the other…
Erwin Okken
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