If 2 tan А=3 tan B, then tan (A - B) is equal to
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Step-by-step explanation:
tan(A-B)=tanA-tanB/1+tanA×tanB
from given, tanA=3/2tanB
use this relation above
3/2tanB-tanB/1+3/2tan²B
½tanB/1+3/2tan²B
½tanB/2+3tan²B/2
tanB/2+3tan²B
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