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# How many degrees is angle AOB?

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Math Expert
Joined: 02 Sep 2009
Posts: 51122
How many degrees is angle AOB?  [#permalink]

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22 Jan 2016, 09:22
00:00

Difficulty:

25% (medium)

Question Stats:

80% (00:30) correct 20% (00:00) wrong based on 25 sessions

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How many degrees is angle AOB?

(1) Angle BOC = 35°.
(2) AO is perpendicular to OB.

Attachment:

2016-01-17_2316.png [ 2.56 KiB | Viewed 804 times ]

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Re: How many degrees is angle AOB?  [#permalink]

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24 Jan 2016, 06:44
How many degrees is angle AOB?

(1) Angle BOC = 35°.
No information about Angle AOC or Angle AOB.

Not Sufficient
(2) AO is perpendicular to OB.
AO forms an angle of 90 degrees on OB. Therefore, Angle AOB is 90 degrees.

Sufficient

Re: How many degrees is angle AOB? &nbs [#permalink] 24 Jan 2016, 06:44
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