For a regular polygon with n sides of length s, the area is given by:
A = n/4 s^2 cot pie / n
this is also shown in http://en.wikipedia.org/wiki/Polygon#Area
What does cot mean in this formula?
2007-05-12 23:17:49 · 10 answers · asked by L B 4 in Science & Mathematics ➔ Mathematics
cot is an abbreviation for cotangent. In a right triangle, cotangent of an acute angle is equal to the adjacent side divided by the opposite side.
SInce cot is not on a key on the calculator, to find the area using this formula, you'll have to use 1/tan(pie/n). You do this because cotangent is equal to 1/tan. It is also equal to cos/sin.
It wasn't very nice for people to call you stupid. Just ignore them.
2007-05-13 00:49:55 · answer #1 · answered by Melody 3 · 3⤊ 0⤋
cotangent. cot = 1/tan
In a right triangle with acute angle X, cot X = side adjacent X / side opposite X
2007-05-12 23:24:35 · answer #2 · answered by jsardi56 7 · 1⤊ 0⤋
cot is a trigonometric function of an angle, eg: cot A is cot function of the angle A. It stands for co tangent of an angle. It is the ratio of adjacent side to the opposite side of an angle.
Referring a book for this would be of better help.
2007-05-12 23:28:31 · answer #3 · answered by Abhiram A 1 · 2⤊ 0⤋
What Is Cot
2016-11-12 08:05:28 · answer #4 · answered by donaldson 4 · 0⤊ 0⤋
In trigonometry cot(cotangent) is used, cot=1\tan(tangent)
2007-05-12 23:24:26 · answer #5 · answered by indraja a 1 · 0⤊ 1⤋
cot x = 1/(tan x) = (cos x) / (sin x)
So another way to think of the formula is: A = n/4 s^2 cos (π / n) / sin (π / n)
2007-05-12 23:28:19 · answer #6 · answered by Wooly 4 · 2⤊ 0⤋
"Cot" is a trigonometric function meaning "cotangent," the inverse of tangent. It is equal to cos (cosine)/sin (sine).
2007-05-13 03:03:19 · answer #7 · answered by Derek S 1 · 1⤊ 0⤋
cot or sometimes cotg is cotangant which is cos/sin;
means cotx = cosx/sinx
got it?
2007-05-13 00:25:03 · answer #8 · answered by Farid 1 · 0⤊ 1⤋
cot x = 1/(tan x) = (cos x) / (sin x)
cosec x = 1/(sin x)
sec x = 1/(cos x)
2007-05-12 23:19:55 · answer #9 · answered by gudspeling 7 · 2⤊ 0⤋
Yes you're right. It is when sin(x) ≠ 0. If you want to write it in mathematical notation. x ∈ R \ {nπ} where n ∈ Z (n is an integer).
2016-03-18 23:41:22 · answer #10 · answered by Anonymous · 0⤊ 0⤋