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trigonometric functions

graphs of some trigonometric functions

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bunch of numbers

Unusual Counting Systems

number zero, 0 balloon

Is Zero an Even or an Odd Number?

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Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

World Data Locator Map: Australia

Is Australia an Island?

Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro

Why Is Christmas in December?

Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden

7 Winter Solstice Celebrations From Around the World

Facsimile of one of William Henry Ireland's forgeries, a primitive self-portrait of William Shakespeare(tinted engraving). Published for Samuel Ireland, Norfolk Street, Strand, December 1, 1795. (W.H. Ireland, forgery)

The Time a Law Clerk Successfully Forged a New Shakespeare Play to Impress His Dad

Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics

10 Best Hockey Players of All Time

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Images

trigonometric functions

trigonometric functions

Based on the definitions, various simple relationships exist among the functions....

Encyclopædia Britannica, Inc.

graphs of some trigonometric functions

graphs of some trigonometric functions

Note that each of these functions is periodic. Thus, the sine and cosine functions...

Encyclopædia Britannica, Inc.

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