If you are d metres away from the base of an object, and the top of the object is at an angle x from the horizontal, then the height of that object is given by:h = d*tan(x).
If you want to be more accurate, or if x is small, you should add the height of your eyes from the ground to the answer obtained from the above formula..
By means of trigonometry if you know the angle of elevation or by comparing it with a nearby object if you know its height and shadow length.
Trigonometry
It is the reciprocal of the sine ratio.
Neither, it is a mathematical discipline.
If the triangle is right-angled then you should be able to use Pytharoras Theorem to calculate the missing side otherwise you need an angle to be able to use trigonometry
Oceanographers use trigonometry to calculate the height of tides in oceans
By means of trigonometry if you know the angle of elevation or by comparing it with a nearby object if you know its height and shadow length.
Using trigonometry and the tangent ratio its height is 135 meters to the nearest meter.
Dh / bh
The aspect ratio of a duct can be evaluated as the ratio of width to height. As the aspect ratio increases, vibration noise, friction and cost also increases.
Trigonometry
You are looking for this answer because your dumb its true.
It is the reciprocal of the sine ratio.
Neither, it is a mathematical discipline.
If the triangle is right-angled then you should be able to use Pytharoras Theorem to calculate the missing side otherwise you need an angle to be able to use trigonometry
trigonometry
You could use a BMI calculator which gives you a ratio. The ratio is your weight in relation to your height. You can use this ratio as your percentage to measure how far you are from your ideal weight.