**How to find the angles of vectors in a coordinate plane**

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## How To Show Right Angles In Coordiante Geoetery

### How to calculate XY coordinates given Angle & Distance

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## How To Show Right Angles In Coordiante Geoetery

### Also the right triangles AORand AOQare congruent since \ RAO = \ QAO ( AO is the angle bisector) and \ AOR = \ AOQ (the angles of a triangle sum to 180 degrees) and AO is a common side.

- Right angles are created by perpendicular lines. You first have to find the slopes of the lines. You know lines are perpendicular when the slopes are negative reciprocals.
- Finding the "angle" depends on which coordinate system you use. In a circular coordinate system, the two attributes of a point contains an angle and a magnitude. Finding the angle is very easy, in this structure. However, if you use a cartesian coordinate system, your coordinates are the identifies points on two perpendicular real number lines. In this case, trigonometric functions can be used
- Polar coordinates with polar axes. The red point in the inset polar $(r,\theta)$ axes represent the polar coordinates of the blue point on the main Cartesian $(x,y)$ axes.
- In coordinate geometry, points are placed on the "coordinate plane" as shown below. It has two scales - one running across the plane called the "x axis " and another a right angles to it called the y axis .

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