"!
the rectangular box shown in the figure has dimensions 10"" 7"" 3"" (a = 10, b = 7, c = 3). approximate the angle formed by a diagonal of the base and a diagonal of the 7"" 3"" side. (give the answer to two decimal places.)"

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x2=102+72 = 14
x= √149 = 12,2
and for b-c diagonal

y2=72+32=58
y= √58 = 7,616
and a-c

z2=12,22+7,6162=206,84

z = √206,84 = 14,3
so angle would be

cosθ=7,616÷14,38
θ = 58.19

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Step-by-step explanation:

718, 781, 817, 871, 178, 187

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