# Explore Band Tattoo, Maths and more!

삼각함수 - 위키백과, 우리 모두의 백과사전

Definiciones respecto de un triángulo rectángulo

(1) Línea media de funciones trigonométricas | Panel | Trigonometría | Khan Academy

How A Hypotrochoid Is Made #Mechanism http://www.lifehack.org/articles/lifestyle/16-gifs-make-mechanism-expert.html?utm_term=0_983e966a3e-1fc3b054f7-415115113&utm_content=buffer119f8&utm_medium=social&utm_source=pinterest.com&utm_campaign=buffer

10 Secret Trig Functions Your Math Teachers Never Taught You...(because they are from a pre-calculator world) A diagram with a unit circle and more trig functions than you can shake a stick at. (It's well known that you can shake a stick at a maximum of 8 trig functions.) The familiar sine, cosine, and tangent are in blue, red, and, well, tan, respectively. The versine is in green, and the exsecant is in pink. Excosecant and coversine are also in the image.

Excellent use of the chord theorem (when two chords intersect each other inside a circle, the products of their segments are equal). This is simpler tha... - Tom Eigelsbach - Google+

One circle with radius a and another with radius b combine to give an ellipse with width & height (major & minor axes) of a + b and a. [code]

standard deviation & bell curves. Some people do not think of this anymore. They expect everyone to be at the top.

Pythagoras proof from circle. Inscribed triangle formed by semicircle is a right triangle. Similar triangles are formed having angles which are complementary.

Trig functions on the unit circle