These inverse functions are the reverse of the sine, cosine and tangent. These inverted ratios should not be confused with the “inverse” trigonometric functions e.g. The reciprocal functions are simply the inverted ratios, the inverted sine, cosine and tangent. The “reciprocal” of these three functions are cosecant, secant and cotangent. Each of these is a ratio: a ratio of two sides of a right-angled triangle. The most familiar trigonometric functions are sine, cosine and tangent (abbreviated to “sin, cos and tan”).

26 *Sine or cosine, for short : TRIG FUNCTION 23 NFL six-pointers : TDSĪ National Football League (NFL) player might score a touchdown (TD). The lead-in is the lower part of the antenna, the part providing the electrical connection between the aerial and the instrument, radio or TV. Strictly speaking, the aerial is the top part of an antenna. We tend to use the term “aerial” and “antenna” interchangeably. 20 *Broadcast quality determined by a car antenna : RADIO RECEPTION If you ever get the chance, it’s a “must see” as it really is a quite magnificent building with a fascinating collection of art. I had the privilege of visiting the Dalí Museum in Figueres some years ago, just north of Barcelona. The famous surrealist Salvador Dalí was born in Figueres, Spain. Geological time is divided into a number of units of varying lengths. The names “cation” and “anion” come from Greek, with “kation” meaning “going down” and “anion” meaning “going up”. 16 Negatively charged particle : ANIONĪs we all recall from science class, a positive ion is called a cation and a negative ion is an anion. The term “tilting” was applied to the sport in the 1500s, although by then the cloth barrier had been upgraded to a wooden fence. At some point, the path of the two charging horsemen was separated by a cloth barrier known as a tilt (“tilt” meant “cloth covering”). Such an event has been referred to as “jousting” since the 1300s.

“Jousting” and “tilting” are synonyms describing the medieval competition in which two horsemen yielding blunted lances attempt to unseat each other. The term was first applied to the Moon, which is a real paradox as the Moon doesn’t have any atmosphere. The word “atmosphere” comes from the Greek “atmos” meaning “vapor, steam”. Today’s Wiki-est Amazonian Googlies AcrossĪn atmosphere is the layer of gasses surrounding a body, usually a planet.

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