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17 Oct 2017, 23:39
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
74% (02:00) correct
26%
(02:18)
wrong
based on 135
sessions
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Not Attempted Yet
AC is a diameter of the circle and B is a point on the circle. ACD is a straight line. What is the value of x?
(1) AB = BC
(2) x = 2y
Attachment:
2017-10-18_1037.png [ 14.65 KiB | Viewed 11360 times ]
Updated on: 19 Oct 2017, 00:58
Originally posted by Alexey1989x on 17 Oct 2017, 23:54.
Last edited by Alexey1989x on 19 Oct 2017, 00:58, edited 1 time in total.
Last edited by Alexey1989x on 19 Oct 2017, 00:58, edited 1 time in total.
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(1) following to properties of right triangles, if AC is diameter then angle ABC = 90 ===> side angles BAC=BCA=x are 45.
(2) since we don't know if AB=BC we cannot define the value of angle x
Answer A.
(2) since we don't know if AB=BC we cannot define the value of angle x
Answer A.
19 Oct 2017, 00:45
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Alexey1989x
Hi Alexey,
The question is not asking us to find out the value of y. Its asking for value of x only.
Thanks for notice! 
