I know what it means in trig, but when applied in general?
For example, I was doing a question and the question asked me to answer with an 'exact value'.
The answer I got was 5/0.7. When I checked the answer it was 50/7. I can see where they got this answer, but I guess my question is really, is an exact value one without decimal points? Thank you in advance ðŸ˜€
2 Answers

âˆš2 = 1.4142135623730950488016887242097
you would just leave it as âˆš2, you wouldn't put 1.41
since 5/.7 = 50/7 either would be an exact value
you wouldn't write
5/.7 = 7.1428571428571428571428571428571
5/.7 = 7.14
you just leave it as 5/.7 or 50/7

NO. An exact value is one that is not approximated. If you answer has a radical in it, you leave the radical and do not approximate it. If it has a fraction such as 1/3, you leave it and do not approximate it as .3 or .33 or even.333333333333333
Read more: http://wiki.answers.com/Q/What_is_Exact_value#ixzz...
Another explanation:
Exact value is where you cannot estimate the value you must be precise, eg; you canâ€™t estimate something as being around about 5 centimetres; no you need an exact value such as 5.62.
In short, your answer 5/0.7 is every bit as exact as 50/7.