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# Help with radian question! watch

1. Here is the question, I'm puzzled as for part A I got -4.92, but you cant get a negative angle!

2. Think you need to show that piece of working!
3. (Original post by Mr M)
Think you need to show that piece of working!
I'm using 1/2r^2Q (Q= theta)

0.5(9.2^2)Q=37.4
Q= 37.4 - 42.32
Q= -4.92
4. (Original post by User32432432)
I'm using 1/2r^2Q (Q= theta)

0.5(9.2^2)Q=37.4
Q= 37.4 - 42.32
Q= -4.92
Oh dear.

5. (Original post by Mr M)
Oh dear.

Oh my dear lord, Just realised what I missed, feel stupid lol.
Thanks
Did you get 0.89 Rad ?
6. try solving the equation first for

to get:

then plug the values in
7. (Original post by User32432432)
Oh my dear lord, Just realised what I missed, feel stupid lol.
Thanks
Did you get 0.89 Rad ?
0.8837429 (although difference is tenths of an angle [in degrees])
8. (Original post by Hasufel)
0.8837429
Yea, good I rounded it up 2 sig fig

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