Trigonometry is really useful in life. If you want to be and engineer, architect, or builder, trig. is useful. If you say that a right triangle has an angle degree of 30 degrees, and the side opposite the angle is 10 ft, you can conclude that the hypotenuse is 20 ft. Trig. also states that any right triangle with a 45 degree angle has a ratio of .707106781184562. the ratio( sine) is 1 divided by the square root of 2, of the square root of 2 divided by to. Trust me, it's easier that it sounds
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it doesnt.
Surveying the land. Laying out the position of the foundation of the building.
this is a grat question wish i could help...
Depending on your career, you may or may not need trigonometry. If your job does not require a lot of math, it is unlikely that you will use trigonometry very often, however, this is not a reason not to study it. The skills and discipline developed in your trigoometry class will help you no matter what career you choose.
It is a number - in trigonometry or elsewhere.