Addition and subtraction trig identities - By Khan Academy
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DESCRIPTION:
Sal evaluates the cosine of the sum of 60������������ and another angle whose right triangle is given. To do this, he must use the cosine angle addition formula.
OVERVIEW:
Addition and subtraction trig identities is a free educational video by Khan Academy.It helps students in grades 0 practice the following standards HSF-TF.C.9.
This page not only allows students and teachers view Addition and subtraction trig identities but also find engaging Sample Questions, Apps, Pins, Worksheets, Books related to the following topics.