Use cofunction identities and trig identities to find the indicated trig functions
2,889 views · Published 8 November 2012 · 1:03 · Indexed 28 October 2026
Channel: Brian McLogan · 2012 · Education
http://www.freemathvideos.com In this video series I show you how to use even and odd functions to evaluate trigonometric functions. Cosine and secant are our even functions where sine, tangent, cosecant and cotangent are our odd functions. cos(t) = 3/4. Find cos(-t)
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