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 P6 Maths ! 2012 SA1 RGPS Paper 1 Q30
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By: geniuskids (offline)  Tuesday, April 30 2013 @ 10:48 AM CDT (Read 1392 times)  
geniuskids

Hi there,

For this question, pls refer to the test paper as I did not upload.

My answer is 69 degrees.

Answer from Answer sheet is 53 degrees.

Pls help clear my doubts

Thanks

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By: echeewh (offline)  Wednesday, May 01 2013 @ 11:21 PM CDT  
echeewh

Hey geniuskids,

You have not shown your method or working; hence I am not able to comment.

Following pls find my worked solution:

Angle USR = 12 + 25 = 37° {Exterior angle = Sum of Interior Opposite angles}

Hence, Triangle RSU is isosceles. {UR = RS}
So is Triangle RUQ. {UR = RQ}

Angle URQ = 37 + 37 = 74° {Exterior angle = Sum of Interior Opposite angles}

Hence,
Angle UQR = (180 - 74) ÷ 2 = 53°

==========

Trust this helps.

Do let me know again if there 's further clarification.

Cheers,
Edward

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By: geniuskids (offline)  Saturday, May 04 2013 @ 10:35 AM CDT  
geniuskids

Thanks! I got it.

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