AC9M9SP01 • Test
Unit-triangle ratios, tangent and gradient
Use the Skillr scratchpad or a notebook to connect unit-triangle lengths, tangent and gradient before selecting an answer.
SkillrHub quiz practice is built for curriculum-aligned revision with answer feedback and a clear review path.
60-second Quick Read
- In a unit-hypotenuse triangle, sin θ is the opposite length and cos θ is the adjacent length.
- The tangent ratio equals opposite/adjacent, which matches gradient as rise/run.
- Common trap: A negative gradient gives an obtuse direction angle when measured from the positive x-axis.
SkillrHub Test guide
Use this short shuffled test set to check the skill, read feedback and review missed items. Repeat quiz practice to access more of the full question bank over time.
- Worked example: Before answering, classify what the question gives, what it asks for, and which curriculum idea links them. For Unit-triangle ratios, tangent and gradient, explain the evidence or method in one complete sentence before selecting the final answer.
- Common mistake: Do not match answers by familiar wording only. Check the full AC9M9SP01 idea, the units or evidence, and any exception in the stem.
- Assessment guidance: Use this short shuffled set for one attempt. Repeat quiz practice to get access to more of the full question bank over time.
- SkillrHub review path: Use feedback to name the misconception, practise a corrected example, and retest only after you can justify the answer aloud.
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