Question

prove that the distance of image formed behind the mirror is equal to the distance of the object in front of the mirror​

Answer 1

Answer:

$\tan(a) = 1 \\ a = { \tan }^{ - 1} \: 1 \\ a = 45 \\ \\ so \: \\ \: \cos(a ) = \cos(45) = \frac{1}{ \sqrt{2} }$

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