CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
4438
@007pagal said begin_of_the_skype_highlighting FREE 007pagal saidend_of_the_skype_highlighting:
X ki range to batade bro and kaise???
4440
@gudda1122 said: cosA*cos2A*cos4A*cos8A*.........cos1024A
find its simplified value
in case you have already done these kinds of question you can choose to leave it
@harshgupta88 have a look
0 h kya
4441
@alkoszzz add kro,, ans is 3
4442
@gudda1122 said: cosA*cos2A*cos4A*cos8A*.........cos1024A
find its simplified value
in case you have already done these kinds of question you can choose to leave it
@harshgupta88 have a look
bhai jan btana kaise karte hai ??!
4443

is it 0

@ gudda1122

4444
@alkoszzz said:
X ki range to batade bro and kaise???
yaar method gudda bhai ne explain kiya hai aur ans hai
[image was removed because it was too large]
4445
@sandy07 im talking about another question bro..i already solved wat ur telling
4446
@gudda1122 said: cosA*cos2A*cos4A*cos8A*.........cos1024A
find its simplified value
in case you have already done these kinds of question you can choose to leave it
@harshgupta88 have a look
bhai direct formula hota hai iska
jaha bhi aise 2 ki power mile

{(sin 2^(n+1)A)/ (2^(n+1)Sin A)}
yahan par answer
n=10 as 2^10=1024 aayega

(sin 2048A)/(2048 sin A)

if this is clear then 1 more question???on this same concept????

and also other people kindly keep on posting questions
4447
@gudda1122 :de do sirji :)
4448

find the simplified value of


cos Pi/7*cos 2Pi/7*cos 4Pi/7
4449
find the simplied value of

cos pi/7* cos 2Pi/7* cos 4Pi/7


4450
@gudda1122 sala ko trigno k teacher hi nahi mila...kaash yahi saare question aa jayein...poori pagalguy ki team ho jaye select jo abhi discuss kar rahi hai...maza aa jaye....:D
4451

find the simplified value of


cos Pi/7*cos 2Pi/7*cos 4Pi/7
4452
@gudda1122 said:
bhai direct formula hota hai iska
jaha bhi aise 2 ki power mile
{(sin 2^(n+1)A)/ (2^(n+1)Sin A)}
yahan par answer
n=10 as 2^10=1024 aayega
(sin 2048A)/(2048 sin A)
if this is clear then 1 more question???on this same concept????
and also other people kindly keep on posting questions
gudda bhai ye formula cos ka jab product hora ho tabb laggeaga????jab sin ka hora ho tabke liye bhi koi formula hai kya..
4453
@gudda1122 said: find the simplied value of
cos pi/7* cos 2Pi/7* cos 4Pi/7
1/8 ??
4454
@alkoszzz said:
@gudda1122 sala ko trigno k teacher hi nahi mila...kaash yahi saare question aa jayein...poori pagalguy ki team ho jaye select jo abhi discuss kar rahi hai...maza aa jaye....
bhai main khud ne aise bas kaam chalu kari hai Trigno
aaj ek post karunga jis mein kuh tricks likh doonga so that atleast kuch question jo easy ho n direct woh toh ho jaye....
4455
@gudda1122 said: find the simplied value of
cos pi/7* cos 2Pi/7* cos 4Pi/7
sin (8pi/7) / 8* sin(pi/7) ??
4456

-cat (pi/7)/2

4457

-cot (pi/7)/8

4458
@yudh said:
gudda bhai ye formula cos ka jab product hora ho tabb laggeaga????jab sin ka hora ho tabke liye bhi koi formula hai kya..
bhai sin k liye value simplify nahi honhi balki increase ho jayengi 😞
@gudda1122 said: find the simplified value of
cos Pi/7*cos 2Pi/7*cos 4Pi/7
solution of this is

sin(8pi/7)/(8*sin pi/7)
=>sin (pi+(pi/7))/(8*sin pi/7)
=> answer is -1/8