Arectangular box has the dimensions shown. (a) determine the angle bac to the nearest degree. (b) determine the area of the triangle abc to the nearest tenth of a cm. useful relations: law of cosines: c2 a2 b2 2ab cos n)c2=a2+b2? 2ab* heron’s formula for triangular area: a=\sqrt{p(p-a)(p-b)(p-c)}a=p(p? a)(p? b)(p? c), where p=\frac{a+b+c}{2}

this is true

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i looked it up

answer: report them

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answer:

c

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