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Source: — Data Sufficiency |
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by thephoenix » Sun Apr 11, 2010 2:52 am
<RSQ=(180-<R)/2 and <UST=(180-<T)/2
now <RSQ+x+<UST=180
and <R+<T=90
eqn will be
(180-<R)/2+X+(180-<T)/2=180
X+1/2[360-(R+T)]=180
X+1/2[360-90]=180
X+1/2[270]=180
X=45
USING BTH HENCE C
Last edited by thephoenix on Sun Apr 11, 2010 4:26 am, edited 1 time in total.
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by dxgamez » Sun Apr 11, 2010 4:03 am
@thephoenix

when you take out the 1/2 as a common factor, the angles should still be 180 - R and 180 - S isn't it?

X=45 in that case..

Doesn't really matter cos we know ans is C. But I wanted to be sure I wasn't doin sth wrong. Let me know what you think.
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