Professor Explaining Trigonometric Proof on Chalkboard
A realistic video of a professor carefully writing and explaining a mathematical proof for trigonometric identities step-by-step on a traditional chalkboard, with clear legible handwriting and natural teaching gestures.

Prompt
A professor writes out a mathematical proof for trigonometric identities on a traditional chalkboard, explaining the step he is currently on in the equation.
Mode
text-to-video
text + image + audio + video -> video
Output
image
Tags
mathematics educationchalkboard lecturetrigonometry proofacademic explanation
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