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Trigonometry

Trigonometry is a field of mathematics. It is the study of triangles. Trigonometry includes planar trigonometry, spherical trigonometry, finding unknown values in triangles, trigonometric functions, and trigonometric function graphs.

3,810 Questions

How do you calculate cosine of an angle?

To calculate the cosine in a right angled triangle:

Length of adjacent side divided by the hypotenuse.

Check out these articles for a simple free tool and tutorial that will make trig simple enough for ANYBODY to understand!

http://www.ehow.com/how_5520340_memorize-trig-functions-losing-mind.html

http://www.ehow.com/how_5227490_pass-mind-part-unknown-sides.html

http://www.ehow.com/how_5428511_pass-part-ii-unknown-angles.html

Does every angle have a vertex?

Every angle has a vertex. A vertex is simply the line through the center of each angle. The line splits the angle exactly in half.

How is mathematics used in airplanes?

Mathematics are important to pilots in many many many ways. Every pilot is aware of the effect weight and balance has on aircraft performance and must be able to use simple equations to quantify these effects on paper before applying them on the runway. Likewise, geometry is vital when navigating aircraft. There are no highways to speak of, and so aircraft navigate using directional headings. Pilots must also be able to use the navigation radio system to triangulate their location on charts and the like.

Pilots are constantly figuring numbers in their heads. Whether he's calculating the ETA based on airspeed minus windspeed (corrected for wind direction) divided by the remaining distance to destination or using fuel consumption info to figure out if that headwind is going to keep him from making it in one go, a good pilot is always thinking of some number it seems. Computerized systems have made some of this automatic, but there will always be a need for math in the cockpit.

What is the length of the hypotenuse and its smallest angle of a right angle triangle with sides of 2.34 cm and 1.64 cm?

Length of hypotenuse using Pythagoras' theorem: 2.86 cm rounded

Smallest using cosine rule: 35.02 degrees rounded

What is the angle of elevation of normal ramp?

For disabled access, regulation elevation is between 1:12 and 1:20

How do you find domain and range?

Consider the mapping between two sets, A and B. To each element of A is associated a unique element from the set B.

The elements of set A which are mapped (the inputs) comprise the domain. The corresponding elements from set B comprise the range.

What is the use of trigonometry in construction?

We can use trigonometry in construction in several aspects:

1- Measure field, lots and areas; -- surveying uses trigonometry extensively

2- Make parallels or perpendiculars walls;

3- Install ceramic tiles;

4- Define roof inclination;

5- calculate how long to make diagonal support beams

And many others...

Construction workers

can use trigonometry it to find the distance of a wall of diagonal space in a rectangle shaped room.

Also, you should go ask your math teacher about this for further information.

What is angel in trigonometry?

angle can be defined as sin-1=O/H, cos-1=/H, or Tan-1=O/A

Where did the word viking come from?

The word 'Viking' is an Old Norse word for a week-long sea voyage. It is cognate with the English word 'week'.

What are the seven types of function?

There are infinitely many types of functions.

For example:

Discrete function,

Continuous functions,

Differentiable functions,

Monotonic functions,

Odd functions,

Even functions,

Invertible functions.

Another way of classifying them gives:

Logarithmic functions,

Inverse functions,

Algebraic functions,

Trigonometric functions,

Exponential functions,

Hyperbolic functions.

What is the usage of trigonometry in mechanical engineering?

The usage of trig. in Mechanical Engineering is extensive. Trig. is used in almost every branch of the subject, especially where quantitative answers are needed to real physical problems such as the size of stresses in structural parts or the volume and frequency of a vibration.

What is the importance of trigonometry in physics?

The easiest way is physics, as does most of the real world, deals with vectors.

You are use to saying: 1 + 1 = 2 and the product of 2 and 3 is 6.


But what is 1 North + 2 South? It's 1 South. While that's an easy one, not everything lines up on an easy axis.


Vectors, unlike scalars, have both a magnitude and a direction. Often times you have to do operations to them, which you need a fundamental understanding of trigonometryfor.

Does the tangent ratio ever get bigger than one?

Yes, it does. For an angle greater than 45 degrees (and less than 90), TAN will be more than 1. TAN of 50 is about 1.19.

Were did the word pistol come from?

From French, where it meant 'a whistle' - which is roughly the same shape. The word came into French from German and German took it from Czech.

How can you used trigonometry when you build skateboard?

the angle of the trucks could be determined using trig but it would depend if you had reverse kingpin or standard kingpin

Why use pie in periodic functions?

Pie is tasty.

Pi, however, is what you use in periodic functions.

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And you do so because periodic functions have properties linked to those of the circle. (You can illustrate this by plotting a sine curve on graph-paper, from a circle whose diameter is the peak-peak amplitude of the wave..)

What is an example of an angle bisector?

in a pie chart (divided into 4 for the sake of easiness ) the 360o circle is bisected into 4 90o angles