2 years ago

Please help. Click to view picture. Algebra question. HELP ME PLEASE ASAP

1 answer:

5 0

First you know you'll divide by -2, so the sign will be flipped.
That eliminates the first and second options, then you'll just have to do math.

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The correct answer option is B. 0.21.

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We are to find the value of $cos \theta$ using the law of cosines.

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$118.81 - (33.64+110.25) = -121.8cosC$

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