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If $x:y=4:5$, then what is the value of z?
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100 80 120 60 |
80 |
In this figure x : y = 4 : 5 We know that the angle made by a straight line is always 180o So, 4a + 5a = 180 a = 20 Now, angle x = angle z ( Vertically opposite angle) So, x = z = 80o |
