| Author |
Message |
![[Post New]](/templates/default/images/icon_minipost_new.gif) 30 Apr 2008 10:34:24 IST
|
|
|
the equation :
3sin2x+2cos2x + 31-sin2x+2sin2x =28 is satisfied for the values of x given by:
cos x=1
tanx = -1
tanx =1
none of these
guys...... rates are assured......
|
|
|
|
30 Apr 2008 10:46:13 IST
|
|
|
is the answer tanx=1 ???
|
this reply: 2 points
(with 0 
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
30 Apr 2008 10:55:08 IST
|
|
|
none of these???
i am getting a diff answer ...
|
this reply: 10 points
(with 2
in 2 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
30 Apr 2008 10:58:12 IST
|
|
|
yes it is none of these 
|
this reply: 12 points
(with 2
in 3 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
30 Apr 2008 11:04:50 IST
|
|
|
Yes,i am also getting none of these.
|
this reply: 7 points
(with 1
in 2 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
|
|
28 = 27 + 1 = 3^3 + 3^0
So either :
1) sin2x + 2cos2x = 3 & 1 - sin2x + 2sin2x = 0
1 + sin2x = 0
sin2x = -1
2cos2x = 3 + 1 = 4
cos2x = 2 ....... not possible
OR
2) sin2x + 2cos2x = 0 & 1 + sin2x = 3
again here sin2x = 2 ...... not possible
and cos2x = -1
SO NONE OF THESE ...
|
---------------------------------------------------------------
- Gaurav Ragtah (spideyunlimited)
|
this reply: 5 points
(with 1
in 1 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
30 Apr 2008 13:12:34 IST
|
|
|
I tink ur ques is wrong
why is it 3^1-sin2x+2sin2x wen it can be 3^1+sin2x
|
IM NO BABY
I HAVE THE SEVENTH SENSE
NONSENSE!!!!!!!!!!! |
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
30 Apr 2008 13:13:42 IST
|
|
|
exactly
there is some mistake in the second exponent! :)
|
---------------------------------------------------------------
- Gaurav Ragtah (spideyunlimited)
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
30 Apr 2008 16:19:44 IST
|
|
|
Please write the correct question.
|
    
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
Moderation Team
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
