graph of sine function on a school blackboard Stock Image
by PixelsAway
Description
rough graph of sine function sketched with white chalk on a school blackboard with strong eraser smudges and dust
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Keywords
- sine
- function
- trigonometry
- mathematics
- graph
- curve
- plot
- periodic
- wave
- sketch
- blackboard
- chalkboard
- chalk
- white
- black
- dust
- smudge
- pattern
- texture
- eraser
- nobody
- horizontal