ICTM 2021 Precalculus Part 1: #9, #11, & #14
As usual, the difficulty of the ICTM 2021 Precalculus Contest is a solid intermediate level. The questions require time to understand and solve and contains several concepts in algebra and geometry as well as precalculus. Some reoccurring concepts include trigonometry, vectors, conics, and imaginary numbers. However, this year's Precalculus contest is definitely a step up from previous years as it would most likely be a bit more difficult and time consuming.
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Question 9: 0:32
Question 11: 4:47
Question 14: 8:01