Need help with unit/ trig equation

[JS]

Hi, If anyone could help me with this equation i'd really appreciat it. I've tried calculating this equation and ended up with 1.175 m. I think the value is ok, it should be somewhere likely around 0 to 2 i think. But for some reason i was thinking that the units would be crossed out in the end..but i still ended up with my answer in meters.


11900kg m^-1 s^-2 + [(1800kg m^-3)(9.8m s^-2) - (1000kg m^-3)(9.8m s^-2)(0.8)] 2cos^2 34 tan 34.17
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(1800kg m^-3)(9.8m s^-2)(2m) sin34 cos34



Thanks

 

[stapel]

For us to be able to check your work, it would be very helpful if you displayed it.

Thank you.

Eliz.

 

[JS]

thanks for responding and sorry about that...I origionally tried figguring out the units before doing the math. I was told it would make things easier... now that i've recalculated it all together again i realize i've made some mistakes... But heres my latest attempt:

= 11900kg m^-1 s^-2 + [(17640kg m^-2 s^-2) - (7840kg m^-2 s^-2)] 2 [1+cos (2 * 34) /2] (0.68)
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(17640kg m^-2 s^-2)(2m) (0.5592)(0.829)


= 11900kg m^-1 s^-2 + [9800kg m^-2 s^-2] (1.3746)(0.68)
------------------------------------------------------------------
(35280kg m^-1 s^-2) (0.4636)

= 11900kg m^-1 s^-2 + (9160.3344 kg m^-2 s^-2)
----------------------------------------------------------
16354.989 kg m^-1 s^-2

= [11900kg m^-1 s^-2 + (9160.3344 kg m^-2 s^-2)] * [ m s^2 / 16354.989 kg ]


= 21060.3344
------------- = 1.2877 m^-1
16354.989 m