The image shows a paper with a diagram of a circle with a number line in the middle of it, which is a trigonometric equation.
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The image shows a paper with a diagram of a circle with a number line in the middle of it, which is a trigonometric equation. The equation is written in black ink on a white background and consists of two intersecting circles, one in the center and one on either side. The circle is surrounded by a thin black line, and the numbers inside the circle are written in a bold font.