0.8660 is a shortened form of ' Sqrt(3) / 2 '.
It refers to
Sin(60 degrees) = opposite(sqrt(3) / Hypotenuse(2).
Similarly the Complementary Sine ( Cosine/Cos) /
Cos(30 degrees) = sqrt(3) / 2
A more accurate valuer for sqrt(3)/2 is 0.8669254038.... ) NB It is NOT the exact value, because sqrt(3 is an irrational number.
how can trigonometry use in metallurgy
Trigonometry is used effectively in electronics.
I can give you several sentences.I have to take trigonometry next year.Trigonometry relates to triangles.I never did understand how to do that trigonometry problem.
There is no single law in trigonometry so the question makes no sense.
Trigonometry is used in the design and construction of buildings, cars, planes, and many other objects. Trigonometry is used in physics and engineering whenever forces, waves, fields, and vectors are involved. Trigonometry is used in music and acoustics to design speakers, instruments, and concert halls. Trigonometry is used to coordinate launches OS space shuttles. Trigonometry is used to navigate ships and planes. Nearly every part of modern life uses trigonometry in some way.
All My Children - 1970 1-8660 was released on: USA: 14 August 2003
The Young and the Restless - 1973 1-8660 was released on: USA: 11 June 2007
Days of Our Lives - 1965 1-8660 was released on: USA: 27 October 1999
866/1000 OR 433/500
plane trigonometry spherical trigonometry
The main kinds are plane trigonometry and solid trigonometry. The latter will include trigonometry in hyper-spaces.
looks like Avery 8660 is the same
Plane trigonometry is trigonometry carried out in (on) a plane. This could be contrasted with spherical trigonometry, which is trigonometry carried out on the surface of a sphere. Certainly there are some other more complex forms of trig.
Trigonometry is applied in construction and building, as trigonometry measures right angled triangles.
Hipparchus is the father of trigonometry.
TRIGONOMETRY
8660 (As verified by Adobe Fast Facts" (PDF). 2009-03-09.