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If the median AD of a triangle ABC divides the angle ∠BAC in

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asked Dec 24, 2019 in Trigonometry by SudhirMandal (53.3k points)

If the median AD of a triangle ABC divides the angle ∠BAC in ratio 1 : 2,then show that sinB/sinC = 1/2 sec A/3.

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1 Answer

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answered Dec 24, 2019 by RiteshBharti (53.5k points)
selected Dec 24, 2019 by SudhirMandal

Best answer

See Fig.

Therefore,

But BD = CD. Therefore,

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