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Mathematics 7 Online
OpenStudy (exoticinspirit):

Explain PHI.

OpenStudy (mathstudent55):

\(\Large \phi\), "phi", is the 21st letter of the Greek alphabet.

OpenStudy (exoticinspirit):

any math to this like PI

OpenStudy (anonymous):

yea lots.

OpenStudy (anonymous):

it can be angle, after they used theta θ , used in complex numbers, sphere coordinates, golden ratio and so on

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