# Thread: tan(60)=15/x; x=8.66

1. ## tan(60)=15/x; x=8.66

How does x=8.66? Would you do 15tan(60)??

2. In case this is unclear, x=8.66 is the answer.
I don't mean to say that x in the problem is equal to 8.66

3. Originally Posted by beetz
How does x=8.66? Would you do 15tan(60)??

$\displaystyle \tan 60 = \frac {15}x$

$\displaystyle \Rightarrow x = \frac {15}{\tan 60}$

$\displaystyle \Rightarrow x = \frac {15}{\sqrt{3}}$

$\displaystyle \Rightarrow x \approx 8.66$