The image is of a handwritten math diagram on a lined piece of paper. The diagram is titled "Phase Diagram" and is a graphical representation of trigonometric functions. The diagram is drawn on a coordinate plane with four quadrants. The x-axis is labeled with "sin(wt)" and the y-axis is labeled with "cos(wt)". The diagram includes lines and arrows that connect the points of intersection of the trigonometric functions with the axes. The diagram appears to be in the center of a page in a notebook, with handwritten notes written in the margins. The writing appears to be in blue ink. The coordinates (latitude: 28.977, longitude: 77.738) locate the image in Meerut, India, suggesting the image was taken there.

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