0
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 is the Logarithmic formula that gives the pH of a substance?
The definitive answer is 'pH = -log(10) [H^(+)]
In words, ' pH is the negative logarithm, to the base ten, of the hydrogen ion concentration.
As an example
If H^(+) is 0.002
Then
pH = -log(10)[0.002]
On the calculator using the 'log' button
pH = -(-2.69897...)
pH = 2.69897...
pH = 2.70
NB This would be an acidic pH
NNB pH is always quoted to 2 d.p. only.
NNNB Do NOT use the 'ln' button on a calculator.
What does tan equal in trigonometry?
Tan = o/a
Tangent of an angle = opposite over adjacent.
Here are the other Trig. functions.
SINe(angle) = opposite/hypotenuse
COSine(angle) = adjacent/hypotenuse
COTangent(angle) = adjacent/opposite
Cosecant(CSC)(angle) = hypotenuse/oppositre
SECant(angle) = hypotenuse/ adjcent.
Were does the word microphone come from?
The word "microphone" comes from the Greek words "micros," meaning small, and "phone," meaning sound. It was first coined in the late 19th century to describe a device that converts sound waves into electrical signals.
Where did the word fluffy come from?
The origin of the word "fluffy" is uncertain, but it is thought to have derived from the Middle English word "flouff." "Fluffy" is used to describe something light, soft, and puffy in texture, like clouds or fur.
Where does the word Phonics come from?
I'm guessing it comes from the word "Phoenicians"--people who are credited with the first alphabet. However, I am not 100% sure.
Where did the word Job come from?
job
1557, in phrase jobbe of worke "piece of work" (contrasted with continuous labor), perhaps a variant of gobbe "mass, lump" (c.1400, see gob). Sense of "work done for pay" first recorded 1660. Slang meaning "specimen, thing, person" is from 1927. The verb is attested from 1670. On the job "hard at work" is from 1882. Jobber "one who does odd jobs" is from 1706. Job lot is from obsolete sense of "cartload, lump," which may also be ult. from gob.
Source: http://www.etymonline.com/index.php?term=job
Where did the word sin come from?
The Aramaic root "Sin", as it occurs in "Sinai" or the "Wilderness of Sin" means 'dirt'. Its eventual meaning in the Judeo-Christian tradition of a 'bad action' probably developed out of the language of 'clean' vs 'unclean' (i.e. 'dirty') in the Hebrew Scriptures.
Where did the word 'netiquette' come from?
'Netiquette' is a portmanteau of 'net' (short for 'internet') and 'etiquette'. It was coined to refer to the set of rules and guidelines for proper behavior and communication online. The term became popular in the early days of the internet as users recognized the need for establishing norms for respectful and courteous online interactions.
I have a set, not sure how complete. They are hardcover, but not red- more a diamond pattern of a fancy ZG monogram on tan background with a black binding. Copyright 1956 by ZG; "by arrangement with Harper & Brothers". If you write me directly, I can send you a picture of the cover and inside of one, typical of the set. eJud @ GO.com
:)
Jud
I also have a set but of the Red and beige. Some have original film. Copyright 1958 thru 196X. Includes autobiography of Zane Grey. 43 volumes.
What is the name of the Trigonometry teacher in Twilight?
The Trigonometry teacher in Twilight is Mr. Berty.
What is tangent of theta as a percentage?
The tangent of an angle theta (tan(theta)) cannot be expressed as a percentage since it is a mathematical function that gives the ratio of the opposite side to the adjacent side in a right triangle. It is a dimensionless quantity and is typically expressed as a decimal or a fraction.
What is usual period for sine?
Periodic functions are those functions for which the value of the dependent variable repeats itself for certain values of the dependent variable.
example:
F(x)=y
x is the dependent variable (output of the function)
y is the independent variable (input of the function)
F(x1)=y1
F(x2)=y1
As you can see the value of the function is the same for two different values of the dependent variable.
The smallest difference between any two dependent variables giving the same value of the function is the period of the function.
The periodicity of the usual sine function is 2pi. This is how it works:
F(X)=sin(X)
sin(x1)=y
sin(x2)=sin(x1+2pi)=y
sin(x3)=sin(x1+4pi)=y
The smallest difference between any two independent variables (x1 or x2 or x3) is 2pi.
This is also evident from the general sine curve (graphical representation). The sine function has a fixed range from -1 to 1 (i.e.,for sin(x)=y, y can only lie between -1 and 1). So, the interval (difference in values of the independent variable) after which the nature of the wave repeats is it's period. Look at the graph and you'll see that the wave replicates after covering 2pi from the current point.
What does one plus cosecant squared x equal?
One plus cosecant squared x is equal to cotangent squared x.
What are the 2 major parts of plant?
The two major parts of a plant are the roots and the shoots. The roots are typically found below ground and are responsible for anchoring the plant, absorbing water and nutrients from the soil. The shoots are above ground and include the stem, leaves, flowers, and fruits. They are responsible for photosynthesis, reproduction, and support of the plant.
What are the identities in trigonometry?
In trigonometry, identities are mathematical expressions that are true for all values of the variables involved. Some common trigonometric identities include the Pythagorean identities, the reciprocal identities, the quotient identities, and the double angle identities. These identities are used to simplify trigonometric expressions and solve trigonometric equations.
What is a reciprocal trig function?
A reciprocal trigonometric function is the ratio of the reciprocal of a trigonometric function to either the sine, cosine, or tangent function. The reciprocal of the sine function is the cosecant function, the reciprocal of the cosine function is the secant function, and the reciprocal of the tangent function is the cotangent function. These functions are useful in solving trigonometric equations and graphing trigonometric functions.
Why tan theta sin theta divided by cos theta?
The answer depends on how the ratios are defined. In some cases tan is DEFINED as the ratio of sine and cosine rather than from the angle in a right angled triangle.
If the trig ratios were defined in terms of a right angled triangle, thensine is the ratio of the opposite side to the hypotenuse,
cosine is the ratio of the adjacent side to the hypotenuse,
and tangent is the ratio of the opposite side to the adjacent side.
It is then easy to see that sin/cos = (opp/hyp)/(adj/hyp) = opp/adj = tan.
If sine and cosine are defined as infinite sums for angles measured in radians, ie
sin(x) = x - x^3/3! + x^5/5! - x^7/7! + ...
and
cos = 1 - x^2/2! + x^4/4! - x^6/6! + ...
then it is less easy to see tan = sin/cos.
How is trig used in everyday life?
Trigonometry is used in everyday life in various ways. It is used in navigation to calculate distances and angles, in architecture and engineering to design structures and determine angles for construction, and in physics and mechanical engineering to analyze forces and motion. Trigonometry is also used in fields such as astronomy, music, and electrical circuits.
How do you get a tangent of 1?
To find the tangent of 1, you can use the inverse tangent function (arctan) on a calculator. Simply input 1 into the arctan function and calculate the result. The tangent of 1 is approximately 0.7854.
Where is the triforce located at in real life?
You cannot get the Triforce in any way. Link, Zelda, and Ganondorf all represent the pieces of the Triforce, so really, as Link, you have a bit of it the whole game.
What is the circumference of a 2 pence coin?
The diameter of an 1826 British Sixpence is 19 mm.
Therefore the radius (r) is 9.5 mm.
The formula for calculating the circumference of a circle is 2 x Pi x r .
The circumference of an 1826 British Sixpence is 59.69 mm.
What is the volume of a penny coin?
The current British Penny (1992 to present) is -
20.3mm in diameter (radius = 10.15mm) and is 1.65mm thick (height).
Volume = Height x Pi (Radius x Radius)
Volume = 1.65 x 3.14 (10.15 x 10.15)
Therefore the volume is a smidgeon greater than 534 cubic mm.
Trigonometry and Pythagoras' theorem
