Ok, thanks. So they're saying 45.58... is approximately 45 degrees. If they're going to choose to give the answer to the nearest degree then it should be 46.

But the important thing is you know what you're doing even if they don't.

General point about rounding: Do the calculation with as much accuracy as you can throughout. Then think what is a reasonable amount of rounding and do it at the end., not during the calculation.

example of what can go wrong.

15 * √24

√24 = 4.898... round off too soon ---> 5

15 * 5 = 75

Correct value is 73.4846922834953..... so if you round that off to the nearest integer you get 73.

Bob

]]>Bob the topic was about... calculating vectors...

Their are two force vectors given,first one 70N north and another is 50N south west,so calculate the resulting force and direction.

What was the topic? That will help in deciding what rounding is acceptable. The cosmological constant for example

Bob

]]>So I am right with the math ?

]]>In a physic book I found this

Is the math correct ? as far my math goes it should be 1.02

Thanks

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