MathematicsIn a right angled  Δle, the hypotenuse is  22 times the length of perpendicular drawn from the opposite vertex to the hypotenuse, then the other two angles are

In a right angled  Δle, the hypotenuse is  22 times the length of perpendicular drawn from the opposite vertex to the hypotenuse, then the other two angles are

  1. A

    π3,π6

  2. B

    π4,π4

  3. C

    π8,3π8

  4. D

    π12,5π12

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    Solution:

    tanA=xAMAM=xtanA

    Similarly CM=xtanC

    AM+CM=22x

    22x=xtanA+xtanC

    22=1tanA+1tanC

    tanA+tanC=22tanAtanC

    Also  A+C=π2

    tanA+tanC1tanAtanC=

    tanAtanC=1

    tanA+tanC=22

    tanAtanC=1

    By solving these two we get  tanA=2+1

    tanC=21

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