Asked by Allison
What does it mean to refer to a 20 inch TV or a 25 inch tv set? Such ubits are refer to the diagonal of the screen. A 25 inch TV set also has a width of 20 inch what is its height?
would I multiply 20 by the height to get the diagonal? I think the answer is 15 inches
Please let me know if this is correct.
would I multiply 20 by the height to get the diagonal? I think the answer is 15 inches
Please let me know if this is correct.
Answers
Answered by
Reiny
The "measurement" of a TV is based on the length of the diagonal, or the hypotenuse
So if a 25 inch TV has a width of 20, then
l^2 + 20^2 = 25^2
l^2 = 625-400 = 225
l = √225 = 15
Based on the Pythagorean Theorem.
So if a 25 inch TV has a width of 20, then
l^2 + 20^2 = 25^2
l^2 = 625-400 = 225
l = √225 = 15
Based on the Pythagorean Theorem.
Answered by
Allison
So was I correcdt
Answered by
Reiny
... but how would you get 15 by multiplying 20 by the height?
Answered by
tchrwill
Might you have noticed the new HD screen ratio comparison to its predecessor?
The old screen ratio was 4:3 while the new one is 16:9. That's 4^2/3^2.
The new screen ratio actually results in an 11% reduction in actual screen area.
The old screen ratio was 4:3 while the new one is 16:9. That's 4^2/3^2.
The new screen ratio actually results in an 11% reduction in actual screen area.
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