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Answer:
A. 0.69
Step-by-step explanation:
To find this, apply the cosine theorem:
c²=a²+b² - 2ab * cos(θ)
where c=8, a=7, b=11
Thus, 8² = 7² + 11² - 2*7*11 *cos(θ)
64 = 49 + 121 - 154*cos(θ)
Thus, 64 - 170 = - 154*cos(θ)
- 106/(- 154) = cos(θ)
[[TAG_29]]Therefore, cos(θ) = 0.69[[TAG_30]]
The answer is 4 packs of medium cups and 6 packs of large cups.
