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Preliminary HSC exam question help (1 Viewer)

Joined
Sep 29, 2013
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196
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Male
HSC
2016
1. Express tan(A+B) in terms of tanA and tanB
2. Hence show if A, B and C are the vertex angles of a triangle then tan A + tan B + tan C = tanA x tanB x tanC
 
Joined
Sep 29, 2013
Messages
196
Gender
Male
HSC
2016
Can you take me through your thought process? What made you think to do all of that?
 

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