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13 Sep 2018, 05:02
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
61% (01:31) correct
39%
(01:35)
wrong
based on 104
sessions
History
Date
Time
Result
Not Attempted Yet
What is the measure of the angle z in the circle with center O?
(1) y = 30
(2) x = 10
Attachment:
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13 Sep 2018, 05:19
Kudos
Bookmarks
Bunuel
Attachment:
IMG_20180913_174102270.jpg [ 47.33 KiB | Viewed 2487 times ]
z = 360-2(x+a)-2(y+b) = 2*[180-(a+b)]-2(x+y), and z = 180-(a+b)
So, z = 2z - 2(x+y)
=> z = 2 (x+y)
So, x is dependednt on both x & y. Hence, C.
28 Dec 2019, 08:11
Kudos
Bookmarks
z = 360-2(x+a)-2(y+b) = 2*[180-(a+b)]-2(x+y), and z = 180-(a+b)
So, z = 2z - 2(x+y)
=> z = 2 (x+y)[/color]
So, x is dependednt on both x & y. Hence, C.
Hey,
Could you explain why do you have like z = 360-2(x+a)-2(y+b) = 2*[180-(a+b)]-2(x+y) ?
I tried to use the rule angle (ABC) = 1/2angle (AOC) with A and C on the cord but it doesn't work... Ty
So, z = 2z - 2(x+y)
=> z = 2 (x+y)[/color]
So, x is dependednt on both x & y. Hence, C.
Hey,
Could you explain why do you have like z = 360-2(x+a)-2(y+b) = 2*[180-(a+b)]-2(x+y) ?
I tried to use the rule angle (ABC) = 1/2angle (AOC) with A and C on the cord but it doesn't work... Ty
