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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
A right triangle has a hypotenuse of length 17 and a leg length 11 what is the area of the triangle?
Its other leg is sqrt(172 - 112) = sqrt(168)
So area of traiangle = 0.5*11*sqrt(168) = 71.29 square units, approx.
Well, there are a few ways-
A) You can go with Sine, Cosine, Tangent (Spelling?)
And that works like this:
Sine=O/H (Opposite over Hypotenuse I believe)
Cosine=A/H (Adjacent side over Hypotenuse I believe)
Tangent=O/A (Opposite over Adjacent side I believe)
This is how you remember that:
Sine=Oscar/Had
Cosine=A/Hairy
Tangent=Old/A**
B) You can do it the easy way (how I do it)- A right triangle goes like this: The legs are A and B, and the hypotenuse is C. This is where we start.
A=B
A=C/ (the square root of 2)
B=A
B=C/ (the square root of 2)
C=A* (the square root of 2)
C=B* (the square root of 2)
All you math teachers out there- this works every time. I know it's not traditional, and there might be some building blocks it skips, but hey- it gets you to where you need to be.
Who would use a Theodolite and Chain in there work?
Surveyors and engineers.
Please see the related link that talks about theodolites, who uses them, how they work, and a few neat pictures:
What is angle of reference in trigonometry?
This is a VERY important question and I am glad you asked it. First you have to remember that in drawing angles we think of 4 quadrants. Think of the XY plane - the first quadrant is where BOTH X and Y are positive. In the 2nd quadrant the X is negative and the Y is positive. In the 3rd quadrant the X and the Y are negative. In the 4th quadrant the X is positive and the Y is negative.
Normally when we draw an angle we draw an angle less than 90 degrees. However, we can draw any angle we want from 0 to 360. However that angle can be represented by an angle less than 90 degrees in a certain quadrant.
Take an angle like 120 degrees. That angle is the same as a 60 degree angle in the 2nd quadrant. A 210 degree angle is the same as a 30 degree angle in the 3rd quadrant. A 359 degree angle is the same as a 1 degree angle in the 4th quadrant.
Those smaller angles are reference angles. This explanation would be better if I could insert graphs.
I have attached a link to a picture. Alpha is the angle and Beta is the reference angle.
The greatest possible slope is 1.
Define system of measurement of sexagesimal?
It is a system of measurements where each "unit" is 60 times the "unit" to its right.
What is the equation of converting horsepower to joule?
Horsepower is a unit of power, but joules is a unit of energy. To convert horsepower to joules, you need an additional time parameter. One horsepower is about 745.7 watts. So a horsepower-hour is 745.7 watt-hours. One watt-hour is 3600 joules. A horsepower-hour is then 745.7 times 3600 = 2684520 joules.
Using Pythagoras' theorem the length of the ladder is 20.248 feet
What mathematician created trigonometry?
Trigonometry goes back to ancient times. The first trigonometric table is attributed to Hipparchus of Nicaea.
What is in a right triangle the longest side which is opposite the right angle?
That is called a "hypothenuse".
How do you find the missing angle measures?
you will have two sides with measurements on them; your angle will be between to two. get me?
you would then type this in your calculator:
sin-1 (shift, then sin, ) , and don't press anything else, and then after that, type in
(one length), and then divided by (the other length) e.g :
sin-1 8 divided by 11.
you then write down the answer ( whole number because it is an angle), and there you go!
Just type in SOH/CAH/TOA in the Google search box and you will have a better description than i have given. if you have anymore questions on trigonometry then i will happily answer them. hope this helps as i have taken a long time to write it! Lauren.
How do you prove cot squared theta plus cos squared theta plus sin squared theta scs squared theta?
Until an "equals" sign shows up somewhere in the expression,
there's nothing to prove.
What is the inverse sine function?
The inverse sine is the cosecant, otherwise known as "hypotenuse over opposite" or arcsine. The cosecant is often confused as being the inverse of the cosine, which, in reality, is the secant, otherwise known as "hypotenuse over adjacent" or arccosine.
Whats the quickest way to get a baby on sims2 p's2?
you can't get pregnant on sims2 for ps2 only for PC i have tried it but you cant you can only woohoo and cuddle
How can you collect data on a research based on trigonometry in real life?
How large is a triangle? The real-life uses of trigonometry extend far beyond mere simple right-triangles into great expanses of scientific and engineering maths in everyday professional use, so "how" you would collect the data would depend on the specific study.
How is trigonometry used is sports?
In track for high jump we did something with the curve of the run that you take to approch the jump. Apparently it shows how the speed of you run propells you over the bar because its a circle... lol hope this gives you a idea.
How do you deal with advanced level maths trignonetry?
You study, understand and practice - as with any other subject.
Find all angles in the interval 0 360 satisfying the equation cos theta equals 0.7902?
cos(theta) = 0.7902
arcos(0.7902) = theta
= 38 degrees
you find complimentary angles
What is the vertex of the angle DEF?
The letter E would be at the vertex. The two lines enclosing the angle E would be ED and EF. Usually, to make it quite clear we would call angle E by the description "angle DEF or angle FED (they are the same angle).
What is the value of x if a is 28 and the b is 14?
There is insufficient information in the question to properly answer it. You need to show an equation that relates x, a, and b. Please restate the question.
