Title Builder Beta See instructions

Welcome to Title Builder Beta.

This small piece of kit is designed to make building your Quiz, Crossword or Puzzle question more effective. It should make finding your question easier for others and, the easier it is to find, the more likely someone is to answer it!

To build an easy to find question title simply select the paper and quiz, enter the quiz number if relevant and fill in the Publication Date. Once you’re happy click “Build Title” and the information should populate the Title field. Fill in the final required details of your question as you normally would, and click submit.

As this is a Beta we only have a limited number of papers and quizzes listed. If you think your favourite Quiz, Crossword or Puzzle should be listed here don’t hesitate to contact us.

Remember: You do not have to use the title builder - simply enter the title and question as you normally would and click submit!

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Igcse Question In The Sunday Times

barnaclebill58 | 18:53 Sun 17th Jun 2018 | Quizzes & Puzzles

2 Answers

LMNP is a quadrilateral.
LMN=58 degrees
NPL=72 degrees
MN=13.7cm
NP=4.3cm
PL =15.6cm
Work out to 3 significant figures angle MLP.

Can't see it-presumably the trick is to construct some right angled triangles and use some trig but can't see it.
Thanks

Buildings Quiz C/d 4/8/2018 Just A Query.

Wordymacwordface 30/6/18

Answers

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jim360

Too many steps for me to follow it through to the end, but I think the solution arises from:

1. Drawing a line between corners L and N.
2. Using the cosine rule (a^2 = b^2 + c^2 - 2 b c Cos[A]) to work out the length of this line.
3. Using the Sine rule (a/Sin[A] = b/ Sin[B]) to work out angles NLP and NLM.
4. Summing these two angles.

This avoids the problem of trying to find a right-angled triangle.

barnaclebill58

Question Author

Ah _ I'd forgotten about those rules .

1 to 2 of 2

Do you know the answer?