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baddinlol
Group Title
Find the real values of x for which the equation is valid.
 2 years ago
 2 years ago
baddinlol Group Title
Find the real values of x for which the equation is valid.
 2 years ago
 2 years ago

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baddinlol Group TitleBest ResponseYou've already chosen the best response.0
\[2\cos (x)=\sqrt{3}\cot (x)\]
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
can you right cot (x) in terms of sin and cos
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
***write nor right
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
I wrote cot(x)=cos(x)/sin(x)
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
And then i cancelled the cos(x)
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
And i was left with sin(x) = sqrt(3)/2
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
now can you write what answer you got
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
I then thought i can get infinite answers....
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
So i wrote pi/3 and 2pi/3
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
I think there are more solutions but i dont know how to writee them
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
..... ok can you tell me what is th sin invers of \[\sin^{1}( \frac{ \sqrt{3} }{ 2 })\]
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
It is pi/3 and 2pi/3 between 0 and 2pi
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
How you got 2pi/3
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
I did pi  pi/3 because sin is also positive in that quadrant
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
yes exactly.. so when we find inverse if get more values we take the lesser value usually.. for example 7pi/3 is also giving same answer but by using the concept above answer will b what?
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
is it pi/3?
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
But i need to state all the values for it
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
so i need to write, pi/3, 2pi/3, 7pi/3, 8pi/3, 13pi/3, 14pi/3 .......
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
How can i write this as a general solution
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
ok.. first take a look at pi/3 and 7pi/3 what can you find
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
any similarity?.. or relation... (clue can you relate with multiple of 2pi
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
Oo i think i found it
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
Is it pi/3 + 2kpi
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
and 2pi/3 + 2kpi
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
exactly.. ther you go... what is k...( no need to tll if you ar pretty sure)
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
And one more thing
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
Will i also need to evaluate cos(x)=0?
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
??? not clear... cab you make it more clear?is it another question?
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
if it is another qustion your answer is (2k+1)pi/2
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
No same one
 2 years ago

baddinlol Group TitleBest ResponseYou've already chosen the best response.0
wouldn't 2cos(x) = sqrt(3)cot(x) if cos(x) = 0 also
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
am I clear?
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
ok...... asuming a fuction itself is zero may not lad you to corrct ansewr... also... here the cos (x) cancels each other (ofcourse before assuming it zero) hence assuming cos (x) = 0 is wrong..
 2 years ago

Rosh007 Group TitleBest ResponseYou've already chosen the best response.0
**lead you to correct answer
 2 years ago
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