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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
An equilateral triangle measures 9 inches on each side its area is?
(81/4)*(sqrt(3))
The area of a triangle is expressed by 1/2 bh, where b is the base length of the triangle, and h is the vertical height. In this instance, the base is equal to 9. The height of an equilateral triangle can be found using the Pythagorean theory with a being half the length of one side of the equilateral triangle, h being the height, and c (the hypotenuse) being the length of one side of the equilateral triangle.
Thus,
a2+h2=c2
(9/2)2+h2=(9)2
h2=81-(81/4)
h=9(sqrt(3))/2
So, A=1/2 bh=1/2 (9)(9(sqrt(3))/2)=(81/4)*(sqrt(3))
Area = 1/2 * length * height
height is square root 2(9)2 = square root 2(81)=square root 192 = 13.85640646...
1/2 * 13.85640646 * 9 = 62.3538290 est. to 62.3 square inch
Why does mathematics play an important role in science engineering and technology programs?
because we use it to calculate/measure things in science for example we use maths to calculate the distance of stars from the earth
When doing Trigonometry do you round the answer to three significant figures?
The answer is not as simple as that. You have to know the accuracy of the measurements or values that are supplied to use. Also, the accuracy requirements of the calculation matter.
Here is a choice:
If calculations were made to determine the pitch of a roof, then measurements and requirements might not dictate 3 place precision. While accuracy in carpentry is important, one or two digits are about the limit of most woodworking measurement tools.
However, if we were trying to calculate the launch trajectory of a space craft to its destination, we would use ten (10) or more significant figures and we would insist on similar accuracy in the measured distances and values used, if not better. Ten significant digits might not be accurate enough. That would depend on how far away the target is.
No one wants to miss Mars after traveling that far! Especially those who made the trip.
How many significant figures are in 1.5e-6 x2.34e4?
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
What is relation between Trigonometry and criminology?
There is no direct relationship. Trigonometry can be used in criminology as can many branches of mathematics and of science.
Where did the word masochism come from?
From the private life, and sexual preferences, of the Austrian writer and journalist Leopold von Sacher-Masoch.
See the Wikipedia article here: http://en.wikipedia.org/wiki/Leopold_von_Sacher-Masoch
-- Horia
Solved paper of msc it 3rd sem?
The simple words or the expressions, which connect the simple prepositions, are known as
Using an example explain what is a URL?
a URL is the destination of a webpage and is identifiable by the code you type in to view a webpage, for example www.google.com is the URL code for the Google Search Site
Where did the word dookie come from?
The word, originally onomatopoeic baby-talk, was popularized by the band Green Day on their highly successful 1994 studio album.
History of the letters use to denote unknown values?
There is no history, since any letter can be used. The letters can be from the Greek or Roman or other alphabets, they can be upper case or lower case.
What do you take after trigonometry?
Amongst other factors, the answer depends on
- where you took trigonometry (which country/school),
- what level you studied,
- what you want to do in life.
How do you work out the inside angle of a triangle using trigonometry?
The answer depends on what information you do have.
If you have all three sides, you use the cosine rule to find any one of the angles and then use the sine rule to find the other two.
Why the tangent of 60 degrees is 1.7321?
Start with an equilateral triangle with all sides of length 2 units and all angles of 60 degrees. Draw the altitude from the apex (top vertex) to the base. Since this is an equilateral triangle, it is easy to show that this line bisects the base.
So now you have a right angled triangle, with a base of 1 and a hypotenuse of 2. Therefore, by Pythagoras, its vertical height is sqrt(3).
Then tan(60) = opposite side/adjacent side = sqrt(3)/1 = 1.7321
It is probably easier if you sketch the diagrams as you go along.
In geometry can a plane contain an infinite number of lines?
Yes, all geometry planes are infinite and have lines going in every direction, except it doesn't look like that when you see a grid because they only need to include some information for a certain part of a line of the plane. All lines go forever in each direction (left and right), and a grid is made up of lines.
Multiply by 8 just like any other number. For example 3 x 8 = 24. To determine if a number is divisible by 8, just consider the last three digits. For example: 25654789008 is divisible by 8 because the last three digits (008) are divisible by 8 (008 / 8 = 1). 78945987345007 is not divisible by 8 because the last three digits are not divisible by 8 (007 / 8 = 0.875).
What is the trigonometric function for cotA plus B plus C?
cot(A+B+C) is, itself, a trigonometric function, so the question does not really make any sense!
It started off as a study of triangles and is a study of straight lines and angles, as well as relationships between them.
How do you learn trigonometry in an easy way?
The Answers community requires more information for this question. What is easy for some people is not easy for others so there is no single answer possible.The best thing to do is to try to understand as much as you can and seek help for the bits which you don't understand. Use sketches to help you work out what information is given and what you are required to work out. And practise.
How do you find the max and min of sine cosine functions?
The maximum of the sine and cosine functions is +1, and the minimum is -1.
How to draw a Hexagon or definition?
A hexagon is a two-dimensional (as on a sheet of paper) figure with six sides.
To draw a regular hexagon (one with all sides equal and all angles equal):
- Using a compass, draw a circle.
- Keeping the same compass setting, place the rotation point of the compass anywhere on the circumference of the circle and mark the two points where the pen side of the compass crosses the circle (you will now have three points on the circle - the rotation point and the two points where the pen side crossed the circle.
- Place the rotation point of the compass on either of the two pen crossing points and mark the new point where the pen side of the compass crosses the circle.
- Repeat until you have six points. If done correctly, these six points will be equal distances apart from each other.
- Connect the adjacent points with straight lines.
Where did the word judo come from?
Judo is the name that Jigoro Kano gave the sport. Judo means gentle way.
