Exam-style question
Try this first
What is the safest exam approach for construct proofs involving trigonometric functions and…?.
- A.E8: justify each step using the relevant trigonometry rule
- B.Use any familiar GCSE calculation even if it ignores Construct proofs involving trigonometric functions and…
- C.Write only the final answer without showing the mathematical method
- D.Change the notation or restrictions to make the algebra look simpler
Model answer
What a good answer should say
- The correct answer is E8: justify each step using the relevant trigonometry rule.
- This option is best because state the assumption, justify each logical step, and identify the conclusion, then checks that the notation, restrictions and conclusion match the AQA A-level Mathematics objective.
This answer is tied to the objective: E8 Construct proofs involving trigonometric functions and identities..
Explanation
Why this works
Use the explanation to connect the worked answer back to E8 Construct proofs involving trigonometric functions and identities..
E8: justify each step using the relevant trigonometry rule is the correct option. It directly supports construct proofs involving trigonometric functions and… by requiring the student to state the assumption, justify each logical step, and identify the conclusion.
The other options are weaker because they hide the reasoning, ignore restrictions, or use a generic calculation that may not fit the objective.
Maths method check
- Topic focus: Pure Mathematics.
- Question style: practice.
- Reasoning demand: understanding.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
No common mistake is linked to this question yet.