Pre-Calculus - Simplify a basic trig identity - Free math tutor online cosB tanB

2,087 views · Published 16 March 2012 · 1:25 · Indexed 8 November 2026

Channel: Brian McLogan · 2012 · Education

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http://www.freemathvideos.com In this video series I will show you how to simplify trigonometric expressions. We will simplify these expression to either a single trigonometric term or number.  To simplify we will use trigonometric identities such as Pythagorean, reciprocal, quotient, even odd, and co-function.  We will also use algebraic rules to help us simplify the expression such as combining like terms, distributive property, multiplicative, additive inverses, and factoring.
cosB tanB

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