In Exercises 8186, verify the identity. 86. sin( + ) cos cos = tan + tan
Chapter 6, Problem 86(choose chapter or problem)
In Exercises 81–86, verify the identity.
\(\frac{\sin (\alpha+\beta)}{\cos \alpha \cos \beta}=\tan \alpha+\tan \beta\)
Text Transcription:
sin(alpha + beta) / cos alpha cos beta = tan alpha + tan beta
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