In this video I go over another example on parametric curves and this time graph the curve formed by the parametric equations x = cos(t) and y = sin(t). Using the Pythagorean trig identity, sin2(x) + cos2(x) = 1, I show that in fact the curve defined by these parametric equations is a unit circle, which is a circle with a radius of 1. The circle is formed by starting at the point (1, 0) and then rotating around counterclockwise one full rotation. The parameter t, in this specific example represents the angle that is formed from the origin to a point on the unit circle. This is a very interesting video on how parametric equations define common shapes and curves that we are accustomed to, such as a circle. So make sure to watch this video!
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Example:
What curve is represented by the following parametric equations?
Solution:
If we plot points, it appears that the curve is a circle.
We can confirm this by eliminating t.
Notice that in this example the parameter t can be interpreted as the angle (in radians) shown above.
The point (x, y) moves once around the circle in the counterclockwise direction starting at the point (1, 0).
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Many many thanks for sharing us a brief knowledge abot calculus.It is the most educative value for us.
Thanks
@resteem & follow done.
Wow awesome ..
After parabola its of ellips
Thanks for sharing mate ..love to see your further videos ..