Pre-Calculus - How to simplify a trig expression using co-function, sin((pi/2) -x)/cos((pi/2) -x)

1,838 views · Published 15 March 2012 · 0:57 · Indexed 21 September 2026

Channel: Brian McLogan · 2012 · People & Blogs

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http://www.freemathvideos.com In this video series you will learn multiple math operations.  I teach in front of a live classroom showing my students how to solve math problems step by step.  My math tutorials should be used to review previous lessons, complete your homework, or study for a test.
sin((pi/2) - x) / cos((pi/2) - x)

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