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VICMath MethodsQuick questions
Unit 2: Functions, calculus and probability
Quick questions on Circular functions extended (VCE Maths Methods Unit 2)
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is confusing $b$ with the period?Show answer
Period is $2\pi/b$, not $b$.
What is forgetting to expand the interval?Show answer
When solving $\sin(2x) = c$ for $x \in [0, 2\pi]$, you must find all solutions for $2x$ in $[0, 4\pi]$ before dividing by $2$.
What is missing solutions outside the principal range?Show answer
$\sin$ and $\cos$ are periodic; there are infinitely many solutions, but only those in the stated interval count.
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