Mathematical Emotions: Canceltharsis
Canceltharsis: the gratifying emotional release of terms cancelling out, as a trig expression collapses to tan x.
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-01-25-a-guide-to-mathematical-emotions--mathematical-emotions-canceltharsis/ (CC BY-NC 4.0)Transcript
Canceltharsis: the immense and gratifying emotional release of terms cancelling out. "Hallelujah!" [Board: sin²x cos²x tan³x / (sin²x (1 − sin²x)(sec²x − 1)) = tan x]