In ∆ ABC, AD is the median .If AD produced to F,

Question

In ∆ ABC, AD is the median .If AD produced to F, AC produced E ,angle DCE =3 /2 angle CDF and angle DAC is equal to 20°,then find angle BDA

sreeda · Accepted Answer

let angle CDF = x° then angle ADC = 180 – x (because its linear pair)also its given angle DCE = 3/2 angle CDF = 3/2 xangle DCE = angle ADC + angle DAC (because exterior angle is equal to sum of interior opposite angles)3/2 x = (180-x) +203/2x + x = 2005/2x = 200x = 80 ie angle CDF = 80angle BDA = angle CDF ( vertically opposite angle)therefore angle BDA = 80

9 grade maths> In ∆ ABC, AD is the median .If AD produce...

In ∆ ABC, AD is the median .If AD produced to F, AC produced E ,angle DCE =
3 /2 angle CDF and angle DAC is equal to 20°,then find angle BDA

Shubhosish , 7 Years ago

sreeda

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9 grade maths> In ∆ ABC, AD is the median .If AD produce...

In ∆ ABC, AD is the median .If AD produced to F, AC produced E ,angle DCE =3 /2 angle CDF and angle DAC is equal to 20°,then find angle BDA

Shubhosish , 7 Years ago

sreeda

LIVE ONLINE CLASSES

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