In ∆ABC,AD is in altitude and angle A is right angle . if AB=√20,BD=4 then find CD
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3
Answer:
1 is the answer
Explanation:
apply Pythagoras theorem in triangle ADB
AB squre = AD square + BD sqaure
20=AD SQUARE +16
AD SQUARE=4
AD=2
APPLY GEOMETRIC MEAN FORMULA IN TRIANGLE ABC
AD SQUARE= BD ×DC
4=4×DC
DC=1
Answered by
1
Answer:
CD=1cm
The answer is correct according to me
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