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The cosine rule is one of the mainstays of trigonometry. If we know two sides of a triangle and the angle between them, we can use it to calculate the third side. Other equations then tell us the remaining angles. All of these equations can
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“No one has ever recruited activists to a cause by announcing that things are getting better,”
― The Better Angels of Our Nature: A History of Violence and Humanity
― The Better Angels of Our Nature: A History of Violence and Humanity
“Information and communications technologies are more widespread than electricity”
― The Age of Surveillance Capitalism
― The Age of Surveillance Capitalism
Manuel Saenz’s 2025 Year in Books
Take a look at Manuel Saenz’s Year in Books, including some fun facts about their reading.
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