The discussion revolves around finding the angle beta (β) from the vector <60, -50, 40> using the cosine formula. The original poster attempts to calculate β using the cosine of the angle derived from the y-component of the vector and its magnitude.
The discussion is ongoing, with participants providing insights into significant figure rules and expressing uncertainty about the correct representation of the angle. There is no explicit consensus on how to round the angle correctly.
Participants reference the need to express the angle to two significant figures, while also noting that the book provides answers to three significant figures. There is a lack of clarity on the rules governing significant figures in this context.
And it's 125 degreesPhanthomJay said:
No, that is three significant figures. What is 124.62 degrees expressed to two significant figures??xtrubambinoxpr said:
I honestly don't know because it clearly has 3 at 125PhanthomJay said:
I am not an expert on significant figure rules, but you can find them through Google and other search engines. But here is a hint: 141.635 rounded to four sig figs is 141.6. If rounded to three sig figs it is 142; that same number rounded to two sig figs is 140. And that same number rounded to one sig fig is 100.xtrubambinoxpr said:
