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timama [110]
3 years ago
5

Help pls! Determine the value of angle a

Mathematics
1 answer:
sergey [27]3 years ago
7 0

Answer:

c.

Step-by-step explanation:

AB=√(5²+8²)=√(25+64)=√89

cos A=8/\sqrt{89} =(8\sqrt{89} )/89

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Which of the choices below is not a possible correlation coefficient?
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Answer:

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Step-by-step explanation:

The correlation coefficient is a measure of dispersion and is a value between -1 and 1, and is defined as:

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