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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
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).
It started off as a study of triangles and is a study of straight lines and angles, as well as relationships between them.
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!
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.
What is the ratio that defines the cosine of an acute angle of the right angle?
It is the ratio of the length of the adjacent side to that of the hypotenuse.
Where does the word spatula come from?
The word spatula comes from the Latin word 'spatha' that has the meaning of broadsword. The spatula is a cooking utensil that is has a flat blade and used to lift or remove foods from hot surfaces.
- SOH: Sin= Opposite over Hypotenuse
- CAH: Cos=Adjacent over Hypotenuse
- TOA: Tan=Opposite over Adjacent
http://rml3.com/a20p/images/trig_sin_cos_tan.gif
What is a period of a trigonometry function?
The period of a trigonometric function, since it depends on the angle of a ray centered in a unit circle, is 2 pi radians or 360 degrees.
What is larger sine A or tangent A in an acute angle?
tangent will always be larger because its denominator is smaller than sine's.
How do you apply maths in your life?
Consider driving into town to buy something:
Do you need to wear warm clothes or light, what is the likelihood of rain?
Do you have enough time to walk to your destination or should you drive? (Many of a car's functions are controlled by microprocessors that do lots of calculations all the time to ensure that your car is working efficiently).
How long will you want to park the car?
How much will parking cost?
Have you got enough cash to buy what you want or do you need a cashpoint?
Do you remember your PIN? (data encryption uses very large prime numbers)
V = 155*sin[120pi*t + a] where V is the voltage, t is the time in seconds and a is the phase shift.
