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ABCD is a cyclic quadrilateral (Fig. …

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ABCD is a cyclic quadrilateral (Fig. 3.7 NCERT) . Find the angles of the cyclic quadrilateral.

Posted by Shabeeha Khadeeja 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Kamboj Ji 6 years, 10 months ago

In a cyclic quad we know that sum of opp angle=180 So, 3y-5+(-7x+5)=180,(eq..1) 4y+20+(-4x)=180,(eq..2) Now from eq 1, 3y-5-7x+5=180, 3y-7x=180, From eq 2, 4y-4x=160, X-y=40, Using any method we will get x=-15 and y=25, substitute the value and result will come

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