The Points Of An Ellipse

The ellipse refers to the locus of the point in the present plane so that the distance sum will remain constant. Fixed points in the ellipse are mainly called a singular focus in the plane, whereas the fixed line is the directrix. Mainly, the eccentricity of an ellipse is represented by ‘e.’ Go with more detail related to the problems of ellipses. The primary term is that the ellipse is as same as the conic section parts.

What is the meaning of an ellipse?

The ellipse is formed with the help of many parts. The main parts are focus, eccentricity, major axis, minor axis, transverse axis, conjugate axis, centre, etc. The locus points present the ellipse in a plane, and some of their distances look equal to their fixed points.

The ellipse is divided into various parts. And these, like focus, eccentricity, minor axis, major axis, are the parts that help form the equations. Generally, the equation of the ellipse is mainly formed with the x and y variables.

Equation of the chord joining the point of the ellipse

Different conditions of the chord joining the points (acosα, bsinα), (acosβ, bsinβ) are: 

• Condition of harmony joining the points cos + sin = cos

• Condition when the significant pivot is along y-hub

• In the circle equation of harmony joining the focuses = 1, on the off chance that b > a, 2a is the length of the minor pivot, and 2b is the length of the significant hub.

1. e2 = 1 − Equation of harmony joining the focuses (when a < b)

2. Length of the latus rectum 

 Equation of harmony joining the focuses

3. foci

 (0, ± be)

4. Directrices

y = ± b/e

5. Vertices

(0, ± b)

Properties of an ellipse

The properties of the ellipse are mainly determined by separating its different shapes. Here some of the different properties of the ellipses are discussed below. Mainly, it is one of the major things that are in the focus of the points.

• The ellipse consists of two main parts: the major axis and the minor axis.
• The formula for the ellipse is πab, where a is considered semi-major lengths and b is the semi-minor lengths.
• The ellipse is similar to the parabola & hyperbola.
• Mainly eccentricity is represented by the symbol ‘e.’

Different formulas for the equation of a chord

Here we will see different formulas for the equation of a chord. The different formulas are set according to the hyperbola.

• Condition of the harmony joining two focuses having unconventional points α and β on the oval x2/a2 + y2/b2 = 1 is (x/a) cos (α+β)/2 + (y/b) sin (α+β)/2 = cos (α-β)/2.
• The condition of harmony joining P(α) = (a cos α, a wrongdoing α) and Q(β) = (a cos β, a transgression β) on the circle x2 + y2 = a2 is (x/a) cos (α+β)/2 + (y/a) wrongdoing (α+β)/2 = cos (α-β)/2.
• For a hyperbola, the condition of the harmony joining two focuses P(a sec α, b tan α) and Q(a sec β, b tan β) is (x/a) cos (α-β)/2 – (y/b) sin (α+β)/2 = cos (α+β)/2.

Solved problem

Question. The harmonies joining the focuses θ1 and θ2 on the circle x2/a2 + y2/b2 = 1 cross the major-pivot in (h, 0). Demonstrate that tan(θ1/2) tan(θ2/2) = (h-a)/(h+a)

Solution:

The condition of the harmony joining θ1 and θ2 is

(x/a) cos (θ1+ θ2)/2 + (y/b) sin ( θ1+ θ2)/2 = cos ( θ1-θ2)/2

Harmonies go through (h, 0).

=> (h/a) cos (θ1+ θ2)/2 + 0 = cos (θ1-θ2)/2

=> h/a = [cos (θ1-θ2)/2]/[cos (θ1+ θ2)/2]

=> (h-a)/(h+a) =[cos (θ1-θ2)/2 – cos (θ1+ θ2)/2]/[cos (θ1-θ2)/2 + cos (θ1+ θ2)/2]

= tan(θ1/2) tan (θ2/2)

Conclusion

When we talk about the formation of the equation of chord joining the points of an ellipse, it is mainly determined by the variables x and y. The main points of the ellipse are the focus, the minor and major axes, etc. There are some main properties of the ellipse that define it. An ellipse also consists of the main formulas that contain the different conditions for every part. Condition of harmony joining the points cos + sin = cos and condition when the significant pivot is along y-hub.