Math, asked by sa0njanushka, 1 year ago

TanA-cotA=4 so tanA+cotA=?

Answers

Answered by abhi178

0

tanA-cotA=4
tanA-1/tanA=4
tan^2A-1=4tanA
tan^2A-4tanA-1=0
use quadratic formula
tanA=2+_root5
cotA=2_+root5
now
tanA+cotA=4

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