A 9-sided "circle" is an nonagon or enneagon.
In a circle that has a radius of one you use Pythagorean theorem to derive the sine, cosine and tangent formulas. Draw a circle around the origin on graph paper. The sine is the line segment from the point where the side of the angle intersects down to the x-axis. etc.
A striaght line , outside the circle, that just touches the circle in one place.
To determine whether to use sine or cosine, consider the context of the problem and the definitions of each function. Sine is used when you need the ratio of the opposite side to the hypotenuse in a right triangle, while cosine is used for the ratio of the adjacent side to the hypotenuse. Additionally, in unit circle problems, sine relates to the y-coordinate and cosine to the x-coordinate of a point on the circle. Identifying whether you are working with angles or sides will help guide your choice.
A Tangent is a straight line, outside the circle, that just touches the circle circumference in one place. A Chord is a straight line , inside the circle, but not passing throught the centre. and touches the circle circumference in two place.
The Arc of a circle is that part of the circumference between two radii.
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Being half of the circumference of a circle, a semi circle has one side
The circumference of a 9 circle is: 28.3
A square whose diagonal is the diameter of the circle. So, if it is a circle with diameter 18 units then the diagonal of the square is 18 units and so its side is 9*sqrt(2) = 12.7 units.
If the diameter of a circle is 9 the circumference is: 28.3
If a circle has a circumference of 9, the diameter is: 2.864
The diameter of a circle is twice the radius. A circle with a radius of 9 would have a diameter of 18. (9*2=18).
A circle has 1 side.Yes a circle has one round side
the right side
A nonagon or enneagon is a nine- sided polygon or 9-gon. Nonagon = Nona + gon where Nona means nine and gon means sides.
a circle only have 1 side
A line. Or a circle