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In the adjacent figure if x:y=11:19 …

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In the adjacent figure if x:y=11:19 AD||BE find LDCE

Posted by Nitesh Kumar 7 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Nitthesh Dhanabal 7 years, 9 months ago

In the adjacent figure x:y=11:19.if AD//BE find the angle DCE

The ques should be AB⊥BD

Solving them
let x and y be 11a and 19a
then in ΔABD
11a+19a+90°=180° (angle sum property)
30a=90°
a=90°/30 = a=30°
∠x=33° (11a)
∠y=57°(19a)
as AB║BD
Then,∠ADC=∠DCE
∠DCE=65° (32+33)

:) Hope this helps!!!

1Thank You

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