Search results
Results From The WOW.Com Content Network
In an equilateral triangle, the 3 angles are equal and sum to 180°, therefore each corner angle is 60°. Bisecting one corner, the special right triangle with angles 30-60-90 is obtained. By symmetry, the bisected side is half of the side of the equilateral triangle, so one concludes sin ( 30 ∘ ) = 1 / 2 {\displaystyle \sin(30^{\circ ...
In mathematics, tables of trigonometric functions are useful in a number of areas. Before the existence of pocket calculators, trigonometric tables were essential for navigation, science and engineering. The calculation of mathematical tables was an important area of study, which led to the development of the first mechanical computing devices.
Mathematical tables are lists of numbers showing the results of a calculation with varying arguments.Trigonometric tables were used in ancient Greece and India for applications to astronomy and celestial navigation, and continued to be widely used until electronic calculators became cheap and plentiful in the 1970s, in order to simplify and drastically speed up computation.
Vietnam free trade agreement [3] China trade and economic agreement; Iran free trade agreement [4] Serbia free trade agreement [5] Singapore free trade agreement [6] European Union Armenia qualifies to export its products under the EU's Generalized System of Preferences (GSP) Georgia [7] Ukraine [8]
The Calabar Free Trade Zone (CFTZ) is an area just north of the port of Calabar, Cross River State, Nigeria that is occupied by companies engaged in manufacturing, trading, provision of services and oil and gas related activities. These companies benefit from special taxation rules and duty-free imports.
Lagos Free Zone (LFZ) is a Free Trade Zone situated in Lagos that is promoted by Tolaram group. [1] The Free zone is integrated with Lekki Deep Sea Port and covers 830 hectares of area in Lagos. [2] [3] Lagos Free Zone is located 60 kilometers to the east of Lagos city. Similar to other free zones, companies in LFZ can sell all their goods in ...
These identities are useful whenever expressions involving trigonometric functions need to be simplified. An important application is the integration of non-trigonometric functions: a common technique involves first using the substitution rule with a trigonometric function, and then simplifying the resulting integral with a trigonometric identity.
The most direct method is to truncate the Maclaurin series for each of the trigonometric functions. Depending on the order of the approximation , cos θ {\displaystyle \textstyle \cos \theta } is approximated as either 1 {\displaystyle 1} or as 1 − 1 2 θ 2 {\textstyle 1-{\frac {1}{2}}\theta ^{2}} .