AQA M1 Jan 2013 Q2

AQA Mechanics 1B January 2013 paper.

[NurAlayat]

Will remember to always do that, cheers :)

[mathedup]

Yes, that would be correct. Always draw a clear diagram labelling the angle you are finding and you can't go wrong :)

[matthedgehog]

For part (d) I used the sine rule and got the right answer, but why is sine rule ambiguity ignored in the mark scheme (giving 131.2 degrees)

[NurAlayat]

For (d), I know this is a stupid question but - let's say if we need to find the angle between the resultant force and the unit vector j. Would it be tan^-1 (7/8) to find the angle?