exam Maths Puzzle Numerical Ability

Find the measure of an angle whose supplement measures 39 degrees more than twice its complement.

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exam Other Question

Should the triangle be solved beginning with Law of Sines or Law of cosines. Then solve the triangle and round to the nearest tenth. a=16,b=13,c=10 Can someone please explain this to me?
Explain why a binomial which is the sum of two squares is non factorable over the integers.
Thank you so mush.