Trigonometry

Volume = (base area) x height.

cosikaipentagon, or a cosipentagon

No. You also need all of the sides to be congruent. For example, a rectangle has four congruent angles, but it is not a regular polygon.

It's x = 0.

Consider a point of the plane, P=(x, y), in cartesian coordinates. If P is a point belonging to x-axis, then P=(x, y=0); if P is a point belonging to y-axis, then P=(x=0, y).

One half base times height (of the triangular section) times length.

centagon

The simplest formula isUn = (-8611*n^2 + 34477*n - 25082)/2 for n = 1, 2, 3.

No, they cannot all be negative and retain the same value for theta, as is shown with the four quadrants and their trigonemtric properties. For example, in the first quadrant (0

-8x-5y-45 is not an equation. An equation requires an equal sign in there somewhere. If you meant -8x-5y=45, then there are many ways to rewrite it, such as -(8x+5y)=45, or 8x+5y=-45, or 8x=-(45+5y), to name three. If you meant -8x-5y=-45, then you're probably looking for 8x+5y=45.

Geometry is used in many different ways in real life.

For example, if you wanted to measure the volume of a circle so that you could know beforehand if some liquid you wanted to get into it would all fit, you could find out beforehand; geometry is used for measurements of things as small as atoms or cells to the size of the earth (and maybe even further)...eventually, you will find that it was great to learn geometry.

Volume = Area of the base X height of prism. This formula works for all prisms, not just triangular prisms.

Area of a triangle = height of triangle X 1/2 X base of triangle.

Theta is most often used to represent unknown angles, especially in the study of trigonometry. Theta represents an angle in degrees, but not in radians.

---------------------------------------

Theta (θ) is a Greek letter, typically denoting an unknown angle. Depending on the context of the problem, it could be in degrees or radians.

trigonometry is very imr

Equilateral triangles have, by definition, 3 equal sides. This means they also have 3 equal angles (i.e. they are equiangular) with each angle measuring 60 degrees. They have 3 lines of symmetry from each vertex to the midpoint of the opposite side. These lines are the medians, perpendicular bisectors, altitudes, and angle bisectors of the triangle. The point where these three lines intersect is the centroid, incenter, circumcenter, and orthocenter of the triangle. The area of an equilateral triangle is sqrt(3)/4*s where s is the side length of the triangle.

All the angles in a triangle add up to 180 degrees. With the isoceles triangle, two of the angles must be the same, so you could have these three angles: 50, 50, 80. (50+50+80=180)

Flight engineers need to calculate how they will get from one place to another. Sounds simple yet they have to take in account their speed, distance, and direction along with the speed and direction of wind. Wind plays an important role in how and when a plane will arrive where it is needed to. this dilemma is solved using vectors to create triangle using trig to solve. More study in the feild of physics and trig will provide more knowledge to this concept. Basically if there is a plane travels 234 mph, 45 degrees N of E, and there is a wind blowing due south at 20 mph. Trigonometry will help to solve for that third side of your triangle to solve where the plane will actually travel with the force of wind added on to its course.

Of enormous use, from the structure of atom to the size of the universe. Were it not for geometry (and other things) you would not be able to ask the question because computers would not exist

Some applications of sine include compression algorithms, like JPEG. Surveying, navigation, ballistic trajectories and astronomy are its other applications.

decagon.
dec/dek means ten ( dekameter = 10 meters)

11

Trigonometry is used in measuring the height of waves, the distance between two celestial bodies and is used in navigation to calculate the distance to the shore from a particular point in the ocean..... also architects use trigonometry to measure the slope of roof..

And much more. the above is just 4 single examples of specific tasks whereas in fact it enters a huge range of fields.

One such field in which trig, is an essential element, is that of electrical, sound and vibration studies and designs (the basic wave shape is a sine wave).