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Mathematics, 30.10.2020 06:30 AllyChance2564

1). tan(a + b) =
5sin2B/
5cos2B - 1

when (2tanA=3tanB) :prove above equation

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1). tan(a + b) =
5sin2B/
5cos2B - 1

when (2tanA=3tanB) :prove above equation...
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