From the cyclic quadrilateral TUVW above find t... - JAMB Mathematics 2010 Question

In the diagram above 88^o + (3x + 20)^o = 180^o

(oppsite < s of circlic quad. are supplementary)

88^o + 20^o + 3x = 180^o

108^o + 3x = 180^o

3x = 180^o - 108^o

= 72^o