EXAMPLE 7 In Fig. 16.91, A, B, C and Dare four points on a circle. AC and BD intersect at a point
E such that BEC = 130° and ZECD = 20°. Find Z BAC.
[NCERT]
SOLUTION Since BED is a straight line and CBEC = 130º.
D
CED
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០ƙ ɨ Ɯɨɭɭ នƬ⩏ᖱƴ คᖲ០⩏Ƭ ɨƬ ค⩎ᖱ Ƭ៩ɭɭ ƴ០⩏..
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