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secondary 4 | E Maths
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Date Posted: 5 years ago
Views: 444
y=90-28 = 62° (△ABO is right angled △)
△COA is congruent to △ABO
so ∠COB is 2y
hence, x=y=62° (x= ½ ∠COB)
z= 360-2y= 236°
△COA is congruent to △ABO
so ∠COB is 2y
hence, x=y=62° (x= ½ ∠COB)
z= 360-2y= 236°
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