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Broad Topics > Trigonometry > Sine & cosine in terms of complex exponential function

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Trig Reps

Stage: 5 Challenge Level: Challenge Level:1

Can you deduce the familiar properties of the sine and cosine functions starting from these three different mathematical representations?

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Hyperbolic Thinking

Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

Explore the properties of these two fascinating functions using trigonometry as a guide.