The discussion centers on calculating the angle β using the equation Cosine β = Ay/lAl, where lAl is determined to be 87.74964387. The calculated angle is arccos(-50/87.75), yielding 124.62 degrees. The main issue arises from the confusion over expressing this angle to two significant figures, with participants clarifying that 124.62 rounds to 120 degrees, not 125 degrees, which is three significant figures.
PREREQUISITESStudents in mathematics or physics courses, educators teaching trigonometry, and anyone needing clarification on significant figures and angle calculations.
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:
