Quick Reference ~ A maths Dictionary for Kids by Jenny Eather Email jeather@iprimus.com.au A Maths Dictionary for Kids by Jenny Eather at www.amathsdictionaryforkids.com

Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm
Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz


Cc

circular functions

• circular functions refer to trigonometric functions.
• they are called circular functions because they can
be demonstrated using a unit circle.
• a unit circle has a radius of 1 with its centre
at the origin of a Cartesian plane.

EXAMPLES:
circle graph, pie graph, pie chart, sector graph

circular functions

animation of the cosine and sine functions
using a unit circle

animated cos and sin functions using a unit circle
Source:
Wikipedia

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