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anonymous
 one year ago
please helpppppppp...... medals and fan
question in comments
anonymous
 one year ago
please helpppppppp...... medals and fan question in comments

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Michele_Laino help me once again

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4please wait, I'm working on your question...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4here is my reasoning: dw:1434709278703:dw we have: \[\Large L = 2r\sin x\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4now, using the theorem of Pitagora, we can write: \[\begin{gathered} \sqrt {4{r^2}  A{B^2}} = 2r\sin x \hfill \\ \sqrt {4{r^2}  A{B^2}} = 2r\sqrt {1  {{\left( {\cos x} \right)}^2}} \hfill \\ 2r\sqrt {1  {{\left( {\frac{{AB}}{{2r}}} \right)}^2}} = 2r\sqrt {1  {{\left( {\cos x} \right)}^2}} \hfill \\ \end{gathered} \]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4\[\Large \begin{gathered} \sqrt {4{r^2}  A{B^2}} = 2r\sin x \hfill \\ \sqrt {4{r^2}  A{B^2}} = 2r\sqrt {1  {{\left( {\cos x} \right)}^2}} \hfill \\ 2r\sqrt {1  {{\left( {\frac{{AB}}{{2r}}} \right)}^2}} = 2r\sqrt {1  {{\left( {\cos x} \right)}^2}} \hfill \\ \end{gathered} \]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4so, by comparison, we can write: \[\large \cos x = \frac{{AB}}{{2r}}\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4now, using the condition of your problem, we can write: \[\large \begin{gathered} AB + AC + arc(BC) = \pi r \hfill \\ 2AB + 2xAB = \pi r \hfill \\ 2AB\left( {1 + x} \right) = \pi r \hfill \\ AB = \frac{{\pi r}}{{2\left( {1 + x} \right)}} \hfill \\ \end{gathered} \] since, by definition of radians we can write: \[\large arc(BC) = 2xAB\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4now substitute the value of AB, into the expression for cos x, what do you get?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4thanks!! :) @alekos

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thanks @Michele_Laino

alekos
 one year ago
Best ResponseYou've already chosen the best response.0it all follows through quite nicely. how the hell you came up with that so quickly astounds me

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Michele_Laino is a genius @alekos

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0btw @yajna this is the hardest question of this type you can hope to find in p3. So don't stress yourself too much if you find it hard the first time.

Miracrown
 one year ago
Best ResponseYou've already chosen the best response.0A true genius she is! @Michele_Laino :)

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4thanks! @Miracrown

alekos
 one year ago
Best ResponseYou've already chosen the best response.0@michele what do you do for a living?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4at the moment I have no job!

alekos
 one year ago
Best ResponseYou've already chosen the best response.0you've got to be kidding! what sort of job are you looking for?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4for example teacher, draftsman or translator from English to Italian. my last job was to translate texts of patents

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4from English to Italian

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4and my preceding job was nautical draughtsman

alekos
 one year ago
Best ResponseYou've already chosen the best response.0have you been out of work for long?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4at the moment I am without job from at least 10 months!

alekos
 one year ago
Best ResponseYou've already chosen the best response.0i am sure you will find another job soon. keep looking and it will happen. you're a smart lady and you deserve it.

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.4Thanks for your encouragement!! :) nevertheless, please keep in mind that I'm a male, Lol!!
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