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timama [110]
2 years ago
5

Help pls! Determine the value of angle a

Mathematics
1 answer:
sergey [27]2 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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Hey there,
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