i wonder about this assignment number 3.10.54:(adsbygoogle = window.adsbygoogle || []).push({});

http://bildr.no/view/1015746

they solve it with derivation:

http://bildr.no/view/1015750

I tried to solve it like this:

[tex]x=tan^{-1}(\frac{tan75\cdot 30\cdot0,96}{30})=74,4048[/tex]

75-74,4048=0,5952 too much error in angle compared to answer sheet

[tex]x=tan^{-1}(\frac{tan75\cdot 30\cdot1,04}{30})=75,5523[/tex]

75,5523-75=0,5523 angle error under value in answer sheet

I dont get this: how come 1,04 of original height gives smaller max error in angle so that by adding that angleerror from the answer one would exceed the assignment of 4 percent of error in height because:

[tex]\frac{tan75,57\cdot 30}{tan75\cdot 30}=1,0413[/tex]

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# Change in angle gives change in one side of triangle

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