[Short Story] Pausing before 'swapping x and y' in inverse functions. Explanations from 14 teachers fell into three types based on how they handled that step.

The moment I write on the board in an inverse function lesson, 'Solve for x, then swap x and y,' some students in the ...
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Inverse trigonometric functions explained: Solve for unknown angles in right triangles

Learn how to solve for unknown angles in right triangles using inverse trigonometric functions! This step-by-step trigonometry lesson covers labeling triangle sides, using sine and cosine ratios, ...
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Evaluate inverse cosine in a composition by creating a right triangle

Learn how to evaluate an expression with the composition of a function and a function inverse. Just like every other mathematical operation, when given a composition of a trigonometric function and an ...