CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
2924
@pathakrahul
@Brooklyn said: ab = A
A/sin c = C/sin c
n c=20
2925
@watsnew24 said:
plz check Is 1.4 lakh diffrence between the cut & uncut diamond....then answer will be 2 lakh
dhang se properly post karna yar ek vari
2926
@pathakrahul said: in trig abc angl a = 60, b = 100 and ab = 10 cm find ac........soln


yaar zara is q ka formula to put up karna
2927
@Brooklyn said:
dhang se properly post karna yar ek vari
bhai mujhe kyu quote kar rahe ho me to khud pooch raha hu......



2928
@mrudalmodi said: anyone pls give detailed soln of first sum in post # 2752 (pg 138)
and post #2860 pg 143..
QUOTE THE Q AGAIN
2929
@watsnew24 said:
1:12 haimedian divides area in half & itself in ratio 2:1 use kar k dekho
@wolverine1986 said: ABC is a triangle.The medians CD & BE intersect each other at point O.then area(ode)/area(abc)...
a) 1:3 b) 1:4
c) 1:6 d) 1:12
yar tier1 ka ques hai..agar pehle solve kar rakha ho to link de do..otherwise give proper explaination..
bhai ye waala
2930
x= cos^4(y) + sin^2(y); range of x?

x= cos^4y + 1- cos^2y

=> x = 1+ cos^2y(cos^2y - 1)
=> x = 1- [sin^2(2y)]/4

to minimize x, sin^2(2y) should be maximum.

so, sin^2(2y) = 1

min(x) = 1-1/4 = 3/4

to maximise x, sin^2(2y) should be minimum, which is 0

so max(x) = 1- 0 = 1


so, range of x is 3/4
2931
@pathakrahul said: ( 1 + cos pi /10 )* ( 1 + cos 3pi / 10 ) *( 1+ cos 7pi/10) * ( 1 +cos 9pi/10) = ?...soln plz
yaar yeh question solve nhi ho rha h

kafi try kar liya hai

{1+3cos(8pi/10)}(1+3cos(2pi/10)}

k baad samjh nhi aa rha h kaha solve karu
2932
@watsnew24 said:
QUOTE THE Q AGAIN

2933
@watsnew24 said:
QUOTE THE Q AGAIN
2934

@gudda1122 said:
yaar yeh question solve nhi ho rha h
kafi try kar liya hai
{1+3cos(8pi/10)}(1+3cos(2pi/10)}
k baad samjh nhi aa rha h kaha solve karu
bhai mera to ( 1 - cos^2 pi/10)* ( 1 + cos^2 3pi/10) aa raha hai
2935

@wolverine1986 said:
bhai ye waala
1 : 12
2936

@wolverine1986 said:
bhai ye waala
bhai iske liye dig se expl karna padega which is not possible right now............ye qn similarity theorem par base hai..........
2937
@gauravfbi correct answer .. thanx bro
2938
@gudda1122 gauravfbi answer is right... srr for late reply bro.. prob with internet connection
2939
@masuka123 said:
@gauravfbi correct answer .. thanx bro
welcome dude
2940
@mrudalmodi said:
work & time ka answer batana yaar I am getting wrong or else options are wrong
2941
@watsnew24 said:
work & time ka answer batana yaar I am getting wrong or else options are wrong
nahi pata mujhe.. ye ques kisi aur ne post kiya tha.. i reposted.. calculation thoda complex ho gaya.. so i got stuck
2942
@watsnew24 said:
work & time ka answer batana yaar I am getting wrong or else options are wrong
ditto.......i m getting 25 days
2943
@mrudalmodi said:
I am getting approx 30