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Its two equal sides are in the golden ratio to its base. [47] The triangle formed by two sides and a diagonal of a regular pentagon is called a golden gnomon . It is an obtuse isosceles triangle with apex angle 108 ∘ {\displaystyle 108^{\circ }} and base angle 36 ∘ {\displaystyle 36^{\circ }\!} .
The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10 −2 metres ( 1 / 100 m = 0.01 m). To help compare different orders of magnitude , this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm).
The quantity 206 265 ″ is approximately equal to the number of arcseconds in a circle (1 296 000 ″), divided by 2π, or, the number of arcseconds in 1 radian. The exact formula is = (″) and the above approximation follows when tan X is replaced by X.
MathJax renders math in most popular browsers, including Internet Explorer 6+, Firefox 3+, Google Chrome 0.3+, Safari 2.0+, Opera 9.5+, iPhone/iPad Safari, and the Android browser. Some older versions of browsers do not support web fonts (with the @font-face CSS construct), so they have to use MathJax image font mode. The browser compatibility ...
When density and gravity are approximately constant (that is, for relatively small changes in height), simply multiplying height difference, gravity, and density will yield a good approximation of pressure difference. If the pressure at one point in a liquid with uniform density ρ is known to be P 0, then the pressure at another point is P 1:
In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.
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U+2252 ≒ APPROXIMATELY EQUAL TO OR THE IMAGE OF: Which is used like "≈" or "≃" in Japan, Taiwan, and Korea. U+2253 ≓ IMAGE OF OR APPROXIMATELY EQUAL TO: A reversed variation of U+2252 ≒ APPROXIMATELY EQUAL TO OR THE IMAGE OF. U+225F ≟ QUESTIONED EQUAL TO: U+2A85 ⪅ LESS-THAN OR APPROXIMATE: U+2A86 ⪆ GREATER-THAN OR APPROXIMATE