Trigonometry

Tessellations

Change all the signs.

Suppose you have the quadratic equation: y = ax2 + bx + c

Its additive inverse is -ax2 - bx - c.

The tangent (of a curve) is a vector that is tangent (perpendicular to the normal), i.e. the instantaneous velocity of the curve at a specific point. As such, the initial tangent is the initial velocity of the curve at the point where t=0.

Stated in other terms, the tangent is the slope of the line at a point. This is expressed (in two dimensions, but applicable to higher dimensions), as the line that has x and y coordinates equal to the point of tangency, and slope equal to the limit of delta y over delta x as delta x (and delta y) approaches zero.

Yes a tangent is a straight line thattouches a curve at only one point

But there is a tangent ratio used in trigonometry

the acient greek gods

It was the French mathematician Rene Descartes who introduced the Cartesian plane and some of the terms are:-

Horizontal x axis

Vertical y axis

Both axes have a number line and are perpendicular to each other at (0, 0)

The origin is at the coordinates of (0, 0)

The equations of straight line are plotted on it.

The equation of a straight line is y = mx+c whereas m is the slope of the line and c is the y intercept

If it is signed over to me then your name has got nothing to do with it. I can do whatever I like with the car.

civil engineers have special heavy duty boots called engineers boots.

these boots are quite expensive

so they use trigonometry to save money

they can stand on one side of a river set up 2 points a known distance apart

and just sight across the river thru a protractor with a telescope to the other side at any target they see

this way they dont need to carry a tape across the river to measure the distance

their boots would get wet and muddy

when they do this for a few years they save enough money to hire a rodman

to cross the river and place high visibility targets for them so they make less mistakes and make even more money

it is the square root of 3 divided by 2

5000 kilometers

A sector is a part of a circle which looks the same shape as a piece of a circular pie. You probably remember that Pi charts look like a circular cake cut into portions. We can calculate the area of the sector of a circle if we know the angle between the two straight sides and the radius of the circle. Now the area of a complete circle is Pi x square of radius, If the radius is 12 cm then the circle's area will be Pi x square of 12 square centimetres. But that is for the full circle. If the sector's angle is 60 degrees, that would mean that the area of the sector would be 60 degrees/360 degrees which equals 1/6; so finally, the area of the sector is (Pi x 12 squared) divided by 6 = 75.398 sq cm )correct to 4 decimal places).

A hexagon is a six-sided figure. Cut an equilateral triangle out of a piece of paper. Chop off little equilateral triangles at each tip of the triangle. What you have is a hexagonal piece of paper. Draw around it.

They are measures of angular displacement. In two dimensional space they may be measured in degrees (by beginners) or in radians. There are 2*pi radians in a revolution.

In 3-d space angles are measured in steradians. A sphere measures 4*pi steradians

The period of 1GHz is 1 ns.

The waveform is irrelevant.

Usually applied to accounting, so I will answer based on accounting. If a company has 3000 accounts numbered from 1 to 3000. Lets say you are to look at 100 files. 3000/100 = 30, random sampling is not choosing every 30th account. That does not give an equal chance of selecting each file. File 101 would never be selected. This is a biased sampling. You must use some kind of random number generator to select the 100 files to look at so that every file has an equal probability of being reviewed.

The main part of trigonometry is the study of triangles on spheres. Also, another part of trigonometry is the constant positive curvature.

1.An ant is determined to climb a flagpole that is 18 feet tall . Each day

2.a sphere has two sides . However there are one sided surfaces.

By Pythagoras, if the initial height of the ladder is H1 feet, then

252 = H12 + 92 so H12 = 252 - 92 = 544 so that H1 = 23.32 ft.

After the move, the base of the ladder is 15 ft from the wall. If the height now is H2 feet, then

252 = H22 + 152 so H22 = 252 - 152 = 400 so that H2 = 20 ft.

So the ladder will slide down 3.32 ft or 3 ft 3.9 inches, approx.

Muscles that elevate the angle of the mouth?

Placing a question mark at the end of a phrase does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered.

an equilateral triangle

sec(x) = 2

so cos(x) = 1/2

and so x = pi/3

An octahedron is an eight sided polyhedron. It has eight sides or faces, 12 edges, and six vertexes. Please see the Related Link below for more information and a picture.

(a+b)/a=a/b=phi (the golden ratio, as defined)

(a+b)/a=phi (we'll solve this equation)

1+b/a=phi (just changing the form of the left side a little)

1+1/phi=phi (a/b=phi so b/a=1/phi)

phi+1=phi2 (multiply both sides by phi)

phi2-phi-1=0 (rearrange)

From here, we can use the quadratic equation to find the positive solution:

phi=(-b+√(b2-4ac))/(2a)

phi=(1+√(1+4))/2

phi=(1+√5)/2≈1.618