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secondary 4 | E Maths
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How to find value of z
Date Posted: 7 years ago
Views: 391
angle DBC + angle ABD = 180^
angle DBC = 180 - 40 = 140^
angle y = 180 - 140 - 15 = 25^
angle ADC = angle BCD = 70 + 25 = 95^
angle z = 95degree
If angle y = 20degree,
Triangle ACD do not add up to 180degree therefore angle y = 25degree
angle DBC = 180 - 40 = 140^
angle y = 180 - 140 - 15 = 25^
angle ADC = angle BCD = 70 + 25 = 95^
angle z = 95degree
If angle y = 20degree,
Triangle ACD do not add up to 180degree therefore angle y = 25degree
How do u manage to find the value of y just by knowing triangle ACD is not 180? And how do u know it is not 180?
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Notice that ad and ce are parallel, hence z = x + y
Date Posted:
7 years ago
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