Stake attention in this memory
The image depicts a section of a white wall, likely part of an educational or public building, in Asenovgrad, Bulgaria. On the wall, two sinusoidal curves, one red and one blue, are physically represented by thin, flexible tubes or wires. These curves are secured to the wall with small white clips. A light-colored wooden slat extends horizontally across the wall, acting as a central axis for the curves, with another shorter, vertical wooden slat positioned on the left side, indicating a y-axis. Below the curves, several trigonometric identities are displayed in blue, uppercase lettering, affixed to the wall. These include: * `sin²α + cos²α = 1` * `tga.cotga = 1` * `tga = sinα / cosα` * `cotga = cosα / sinα` The ceiling, a plain gray surface, is visible in the upper right portion of the frame. No individuals are present in the scene. The overall setup suggests a didactic display of mathematical concepts.
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