3 years ago

Can someone help me please

Mathematics

1 answer:

Kamila [148]3 years ago

5 0

Which question do you need help on?

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In movies and television, the ratio of the width of the screen to the height is called the aspect ratio. Television screens usua

weqwewe [10]

Screen's diagonal 25 inches, we need to find its height and width

 $\frac{width}{height}=\frac{4}{3}$

$width = 4\times \frac{height }{3}$

We know tv is a rectangle in shape
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$width^2+height^2= diagonal^2
\\{(\frac{4}{3} \times height)}^2+ height ^2=625
\\
\\\frac{25}{9} height^2=625
\\height^2= {225}
\\height= 15
\\width=\frac{4}{3} \times 15=20$

width= 20 inches
height= 15 inches
So movie with 1.85:1 aspect ratio will occupy width of 20 inches, so its height

$\frac{width}{height} =\frac{1.85}{1}
\\
\\height= \frac{width}{1.85} =\frac{20}{1.85} =10.81\text{ inches}
\\$

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