
Calculate the length of projection screen for home movie theatre

Answer to Problem 22PPS
Length of projection screen for home movie theatre is 104.49 inch
Explanation of Solution
Given:
Diagonal of projection Screen = 120 in (Hypotenuse)
Height of projection screen = 59 in (Perpendicular)
Calculations:
Projection screen for home theatres is described by its diagonal.
Projection screen forms rectangle in which lower part below diagonal is right angle
Thus we can apply Pythagoras theorem to calculate missing element.
As per Pythagoras theorem, hypotenuse square is equal to sum of square of remaining two sides.
Conclusion:
Therefore, we are able to calculate missing element of projection screen of home theatre using Pythagoras theorem.
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