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After joining two pieces of a picture frame together a frame maker checks her work by measuring the diagonal. The sides of the frame form a right angle and the measurements are as follows: a=12in. and b=5in.

Respuesta :

if you are looking for the area 12×5= 60in
remotecontrolbrain

if the sides form a right angle, then the diagonal must be according to the Pythagorean Theorem:

[tex]d = \sqrt{a^2+b^2} = \sqrt{144+25}=13[/tex]

If that is indeed the measurement, the frame maker knows she made the frame right-angled.

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