Question

In a 45-inch plasma television set, the length of the screen's diagonal is 45 inches. if the screen height is 25 inches , find the width of the screen.

Answer 1

Here,
let,
diagonal be hypoteniou=45

and

length be height=25

so, width as base =x. (say)

now by using PGT,
${45}^{2} = {25}^{2} + {x}^{2}$
$2025 = 625 + {x}^{2} \\ 2025 - 625 = {x}^{2} \\ 1400 = {x}^{2} \\ \sqrt{1400} = x$
is the required answer