Premium Sine Rule | Maths Codebreaker | Answers Included

PREMIUM RESOURCE - available to purchase; this is not a free download.

Use the sine rule to find missing sides and specified acute angles.

This Premium paid resource contains one complete A4 pupil worksheet with 20 questions and a matching answer page with workings, plus a product-family guide. Pupils solve the maths, match answers to letters in the code grid and decode the hidden words.

Difficulty: Level 9 of 10 within this range (1 is easiest; 10 is most demanding). These levels are a guide to relative challenge, not GCSE grades.

Three questions from this worksheet:
1. Triangle: side 7 cm is opposite angle 34°; side 5 cm is opposite angle x°. Find the acute angle x, to 1 decimal place.
2. Triangle: side 12 cm is opposite angle 68°; side x cm is opposite angle 45°. Find x in centimetres, to 1 decimal place.
3. Triangle: side 14 cm is opposite angle 42°; side x cm is opposite angle 61°. Find x in centimetres, to 1 decimal place.

Use for focused practice, consolidation, homework or a lesson activity after teaching the method. Print the pupil page for learners and retain the answer page for checking. Follow the rounding and unit instructions on the sheet.

This resource belongs to a completed 100-topic Maths Codebreakers range. Halloween codebreaker resources are also available. A mixed-topic revision codebreaker range is coming soon. These other ranges are separate resources and are not included in this download.