Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

koli123ableBest ResponseYou've already chosen the best response.0
Number 1 \[\frac{ \Delta }{ sa }=s \tan \frac{ \alpha }{ 2 }\]
 one year ago

mathsloverBest ResponseYou've already chosen the best response.1
what does alpha , a , s , \(\Delta\) represent ?
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
\[\Delta=\sqrt{s(sa)(sb)(sc)}\]
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
\[\tan \frac{ \alpha }{ 2 }=\sqrt{\frac{ (sb)(sc) }{ s(sa) }}\]
 one year ago

mathsloverBest ResponseYou've already chosen the best response.1
right... got it now..
 one year ago

mathsloverBest ResponseYou've already chosen the best response.1
so now put these values : \[\large{\frac{ \sqrt{s(sa)(sb)(sc)}}{sa} = \frac{\sqrt{sa} \sqrt{s(sb)(sc)}}{sa} }\]
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
prove it using either l.h.s or r.h.s
 one year ago

mathsloverBest ResponseYou've already chosen the best response.1
Yeah I am using LHS only
 one year ago

mathsloverBest ResponseYou've already chosen the best response.1
well I can write :; \(\large{\frac{\sqrt{sa}}{sa} }\) as \(\frac{1}{\large{\sqrt{sa}}}\)
 one year ago

mathsloverBest ResponseYou've already chosen the best response.1
therefore I get : \[\large{\frac{\sqrt{s(sb)(sc)}}{\sqrt{sa}}}\] = \[\large{\sqrt{\frac{(sb)(sc)s^2}{s(sa)}}} \] That is : \[\large{s\tan \frac{\alpha}{2}}\]
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
can u prove it by multiplying and dividing trick i did'nt understand the roots u changed
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
like taking r.h.s and M & D it by \[\sqrt{s(sa)}\]
 one year ago

mathsloverBest ResponseYou've already chosen the best response.1
see : dw:1360917633731:dw
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
NUMBER 2\[\frac{ sa }{ \Delta }+\frac{ sb }{ \Delta }+\frac{ sc }{ \Delta }= \frac{ s }{ \Delta }\]
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
\[\frac{ sa+sb+sc }{ \Delta }\]
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
what to do after this??
 one year ago

hartnnBest ResponseYou've already chosen the best response.2
didn't you ask the first one earlier also? :O also, for 2nd, we know that s is the semiperimeter , hence, \(s= (a+b+c)/2 > 2s = a+b+c\) so, your numerator\( = sa+sb+sc = 3s (a+b+c) =.... ?\)
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
:D yes i did asked the first 1
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.