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In a triangle ABC, the point D divides BC in the ratio 1 : 2. Also AD is perpendicular to BC. Then the value of the expression tan B ( 1 + 2 tan A tan C) − 2 tan C is………
Dear student,
let AD=x
then AD=x tanB=x 2tanC
It gives tanB=2 tanC
Hence the given expression gives 2 tanA tanB tanC
?
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