More 14's.........like 14i..............................the square root of 2....starts out.......1.414...................


Sine is the ratio of Opposite / Hypotenuse:

sin(45°) = Opposite Hypotenuse

Get a calculator, type in "45", then the "sin" key:

sin(45°) = 0.7071...

0.7071... is the ratio of the side lengths: in other words the Opposite is about 0.7071 times as long as the Hypotenuse.
Maybe you can figure out the height now?
But let's do it formally using some algebra:

Start with:sin(45°) = Opposite Hypotenuse

Put in what we know:0.7071... = Opposite 20

Swap sides: Opposite 20 = 0.7071...

Multiply both sides by 20: Opposite = 0.7071... × 20

Calculate:Opposite = 14.14 (to 2 decimals)