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25 Nov 2018, 09:54
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B
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In the figure above, what is the value of 2x - y?
(A) 0
(B) 15
(C) 30
(D) 45
(E) 60
Attachment:
Angles.JPG [ 15.28 KiB | Viewed 9977 times ]
25 Nov 2018, 10:05
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x = 45 - 30 = 15, since the right triangle formed has angles 90, 45 and (x+30) which is equal to 45
y = 60 - 45 = 15, since the other right triangle formed has angles 90, 30 and (x + 45) which is equal to 60
2x - y = 2*15 - 15 = 15
Hence Option B
y = 60 - 45 = 15, since the other right triangle formed has angles 90, 30 and (x + 45) which is equal to 60
2x - y = 2*15 - 15 = 15
Hence Option B
