Trig Horoscopes
A '3π' character insists its trig-function horoscope is spookily accurate; the joke is that the horoscope just restates when sine equals each value.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2018-12-14-trig-horoscopes/ (CC BY-NC 4.0)Transcript
[Box] "HOROSCOPES — Sine = 0: You are a multiple of pi. Today is good day for travel with friends."
[Paper held by 3π] "Sine = 0: You are a multiple of pi. / Sine = 1: You are pi/2 more than a multiple of pi. / Sine = 2: You are a liar."
3π: "I swear, they're spookily accurate!"
Friend: "Ugh. Why do you read that trash?"