Asked by tony
Use a sum or difference identity to find the exact value.
tan 25deg + tan 5deg / 1-tan 25deg tan 5deg
tan 25deg + tan 5deg / 1-tan 25deg tan 5deg
Answers
Answered by
Steve
tan(x+y) = (tanx + tany)/(1-tanx tany)
so, what you have is
tan(25°+5°) = tan 30° = 1/√3
so, what you have is
tan(25°+5°) = tan 30° = 1/√3
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