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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
If ed is 8 df is 6 and ef is 10 what is the tangent ratio for e?
The triangle is right angled at D.
so tan(E) = df/ed = 6/10 = 0.6
What does a negative angle look like?
A positive or negative angle, refers to the directionthat you are measuring the angle. Not really useful in Geometry, where you're measuring angles of polygons, but in Trigonometry and Complex Numbers (especially signal analysis in Electrical Engineering) it becomes important.
In a unit circle, the convention is to measure positive angles in a counterclockwise direction starting at the positive x-axis. So negative angles are measured moving in a clockwise direction. In signal analysis, two sine waves are plotted with time on the horizontal, and intensity on the vertical. The sign of the 'angle' between the two signals represents if one signal is 'leading' ahead or 'lagging' behind the other signal.
Assuming that acceleration due to gravity is 9.8 m/sec^2, then the required height is 0.75 metres.
How do you simplify csc theta minus cot x theta times cos theta plus 1?
There can be no significant simplicfication if some of the angles are theta and others are x, so assume that all angles are x.
[csc(x) - cot(x)]*[cos(x) + 1]
=[1/sin(x) - cos(x)/sin(x)]*[cos(x) + 1]
=1/sin(x)*[1 - cos(x)]*[cos(x) + 1]
=1/sin(x)*[1 - cos2(x)]
=1/sin(x)*[sin2(x)]
= sin(x)
What number was first one followed by ten zeros was first use by Milton sirotta in 1940?
I don't know anything about Milton using this number, but 10,000,000,000 is in the USA called ten billion, in Great Britain it is 10 million million.
What is the Contribution of Democritus to trigonometry?
Wikipedia has no reference of Democritus' contribution to Trig. He contributed to Atomic theory, and to Geometry. Some Geometry and Trig. topics overlap, so maybe that is what you are referring to.
How is trigonometry used in civil engineering?
Many ways in designing the project, such as solving the structure's force-polygons and calculating component dimensions. Surveying for design, site setting-out and quality-control.
What does the single quote mean in functions?
For a function of only one variable it mean the derivative with respect to that variable.
Thus, f'(x) = df(x)/dx.
Occasionally, it can also refer to a variation of a function. For example, a family of functions, f(x), f'(x), f''(x) and so on.
Using Pythagoras' theorem the third side works out as 4 units in length.
2pi/60 or pi/30 radians per second
How do you find out which quadrant an interval defines?
depends on the branch of math, and the math function/relation you are talking about
What is theta when tantheta plus sectheta equals 1 please show work?
copy this and paste in your browsers address window
http://www.wolframalpha.com/input/?i=tan+theta+%2B+sec+theta+%3D1
Use tangent to find the other leg, and the sine or cosine to find the hypotenuse.
How this pythagorean theorem made?
The Pythagorean Theorem was not made, it was discovered by an ancient Greek philosipher named Pythagoras.
"A greek phylosopher proposed a theory that when two squares are drawn with a common corner and their sides are perpendicular to each other then a third square whose side connects to the corners of the adjacent sides of the first two squares will have an area that is equal to the sum of areas of the first two squares.
let
square1 be Area1 = X x X = X^2
square2 be Area2 = Y x Y = Y^2
Square3 be Area3 = H x H = H^2
the sides are X, Y, H form the triangle whose 90 deg angle is between X and Y.
He states that the sum of the squares of these sides = the square of the thid side.
He is actually reffering to the areas of the three squares. "From...(ENAC)
What are the characteristics of a isosceles triangle?
A three sided polygon in which two sides are equal in length and two angles are equal in size.
Colleges offer multiple semester-long classes in trigonometry; it's not something we can teach you in a few paragraphs on a website. If you're really interested, I recommend you take a class at a community college.
What is the formula of trigonometry?
The answer depends on what other information is available to you.
