3 years ago

Number 1 I don’t get it there is no pictures and what is a linear pair?

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

6 0

A linear pair is 2 angles that form 180° or a straight line. The sum of their measures is 180°

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3 years ago

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kodGreya [7K]

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Last Option

Step-by-step explanation:

We have a triangle and we know its three sides.

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Where

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Now we solve for x from the equation

$c ^ 2 = a ^ 2 + b ^ 2 -2abcosx\\\\\\14^2 = 11^2 + 19^2 -2(11)(19)cosx\\\\14^2 -11^2 -19^2 = 2(11)(19)cosx\\\\-286=2(11)(19)cosx\\\\cosx = \frac{-286}{2(11)(19)}\\\\x = arcos(\frac{-286}{2(11)(19)})\\\\x = 46.8\°$

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3 years ago

Read 2 more answers