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## Homework Statement

What will be the length of mercury column in a barometer tube, when the atmospheric pressure is 75 cm of mercury and the tube is inclined at an angle of 60° with the horizontal direction?

## Homework Equations

Pascal's Law

## The Attempt at a Solution

l ⋅ sinϑ = h

l = h / sinϑ

l = h / sin 60

l = 75 / 0.86

l = 87.2

but the correct answer given in the textbook is 86.6