Answer:
1. true
2. true
3. false
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Given

Required
Determine 
We know that:

This gives:


Collect like terms


Take square roots


By tan identity


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This is very simple, you can use tally marks to find the amount of birthdays. Then divide it by 100. Good luck !
The least common multiple is 8