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Difficulty:
15%
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Question Stats:
75% (00:41) correct
25%
(00:46)
wrong
based on 240
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In the xy-plane shown, what is the measure of angle r?
(1) c = 2
(2) c = d
Attachment:
2020-04-10_1623.png [ 3.65 KiB | Viewed 4513 times ]
10 Apr 2020, 05:27
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Bunuel
In the figure, what is the measure of angle r?
r = tan-1 (d/c)
(1) c = 2
Since d is unknown
NOT SUFFICIENT
(2) c = d
r = tan-1 (c/d) = tan-1(1) = 45
SUFFICIENT
IMO B
10 Apr 2020, 06:15
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In the figure, what is the measure of angle r?
(1) c = 2 --> insuff: tan(r)= d/c=d/2, don't d
(2) c = d --> suff: tan(r)= d/c=1, r= 45 degree
Answer: B
(1) c = 2 --> insuff: tan(r)= d/c=d/2, don't d
(2) c = d --> suff: tan(r)= d/c=1, r= 45 degree
Answer: B
