No calculator, method not answer please

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- January 7th 2010, 10:30 AMMukilabFind value of n
No calculator, method not answer please

- January 7th 2010, 11:03 AMDinkydoe
Divide both sides by 3 to obtain:

Now take the square of both sides to get:

We know that so .

This gives: so

(you can ofcourse save some steps: ) - January 7th 2010, 11:37 AMMukilab
- January 7th 2010, 11:43 AMDinkydoe
if this means that

Since - January 7th 2010, 01:15 PMMukilab
Thanks for the formula I can add to my list!