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VICMath MethodsQuick questions

Unit 2: Functions, calculus and probability

Quick questions on Circular functions extended (VCE Maths Methods Unit 2)

4short 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 wrong quadrant from the sign?
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Use the sign of the original equation, not the reference value, to choose quadrants.
What is q1?
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State the amplitude, period and range of y=3sin⁡(2x)−1y = 3\sin(2x) - 1. [3 marks]
What is q2?
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Solve 2sin⁡(x)=32\sin(x) = \sqrt{3} for x∈[0,2π]x \in [0, 2\pi]. [3 marks]
What is q3?
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A signal is modelled by y=4cos⁡ ⁣(π2t)y = 4\cos\!\left(\frac{\pi}{2}t\right). (a) State its period. (b) Find the first time t>0t > 0 when y=0y = 0.

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