Question: In python write a function grayscale(img) that takes any image and uses the luminance formula luminance = 0.2126R + 0.7152G + 0.0722*B to convert the

In python write a function grayscale(img) that takes any image and uses the luminance formula

luminance = 0.2126R + 0.7152G + 0.0722*B to convert the image to grayscale. Use OpenCV

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