Question

ok dipankarstudy..
i have no clue if this is really difficult
i haven't attempted it yet

Answer 1

http://www.stirlingsouth.com/richard/trig1m.jpg

Answer 2

http://www.stirlingsouth.com/richard/math.htm

Answer 3

i wonder what that symbol by the 1.250 means

Answer 4

ist one is not so difficult.

Answer 5

and the 1.75

Answer 6

what 1.75?

Answer 7

do you see the \[\emptyset\]
what does it mean
what information isn't giving us?

Answer 8

for 1st one let the intersection of tangent and line joining be point A. find the distance from A to any of the centre and then u will find angle x

Answer 9

its diameter

Answer 10

i mean it is*

Answer 11

oh lol i never seen that symbol for diameter

Answer 12

so u can solve it.

Answer 13

hello

Answer 14

i;m here
im just thinking about it

Answer 15

look we have sinx =r1/(5-d)=r2/d
do u agree?

Answer 16

d is the distance from one centre of circle to point A

Answer 17

the radius through point of tangency and tangent are always perpendicular. do u know it?

Answer 18

yes

Answer 19

so sinx =r1/(5-d)=r2/d

Answer 20

what are you calling point A again?

Answer 21

right he is

Answer 22

okay yoda

Answer 23

u know r1 and r2 so u find d

Answer 24

i dont care about point A
i get it dip

Answer 25

its lengthy

Answer 26

once u get d then u can find X

Answer 27

got it myininaya??

Answer 28

yes i totally got it dip lol

Answer 29

d=35/12
so
x=17.46 approximately

Answer 30

are u trying the second??

Answer 31

you were right not hard
you could email that guy and let him know you did his problem lol

Answer 32

i want to see if there is anything harder

Answer 33

u can email..

Answer 34

i dont care about emaling him

Answer 35

i really don't have any interest to let him know that we have done.

Answer 36

yeh hui na baat

Answer 37

so no calculus dip?

Answer 38

how is you integration skills?

Answer 39

they must be good

Answer 40

i know a lil bit

Answer 41

see if you want to attempt
\[\int\limits_{}^{}e^\sqrt{3x+9} dx\]

Answer 42

put 3x+9=y^2

Answer 43

omg so smart

Answer 44

2ye^ydy /3

Answer 45

\[\frac23 \int\limits ye^ydy\]use by parts

Answer 46

yeah cmon test us

Answer 47

\[\frac23 (y-1)e^y+c\]

Answer 48

got it?

Answer 49

lol you suck jk gj

Answer 50

lol

Answer 51

what jk gj?

Answer 52

just kidding
good job

Answer 53

oh..

Answer 54

ok lets try another i have problem please hold

Answer 55

dipankar wt branch r u in?

Answer 56

yeah post it

Answer 57

any new problem @ him?

Answer 58

not right now

Answer 59

ok

Answer 60

u in mechanical?

Answer 61

wts the qstn?

Answer 62

find the height of the lamppost

Answer 63

the thing that looks like a lamppost
there may be more than one way of solving this

Answer 64

2

Answer 65

how did you do that so fast

Answer 66

practice

Answer 67

2 is right
what did you do

Answer 68

assumed the eqn of tangent to ellipse in terms of slope m and then plugged in -5,0 to find m to get the eqn
then plugged in 3, y to find y

Answer 69

this is the way i did it

Answer 70

whats that??

Answer 71

its in the file

Answer 72

ur right as well

Answer 73

the equation of tangent is y=mx+-sqrt(m^2a^2+b^2)

Answer 74

is that @ him..

Answer 75

i think so.

Answer 76

yes thats he eqn of tangent

Answer 77

u have to take only the +ve sign and then put -5,0 as 2him said.

Answer 78

ur in uni arent u myininaya?

Answer 79

uni?

Answer 80

university?

Answer 81

yes

Answer 82

say i give you two circles
the center of these circles has y=x line running through there centers
the big circle has center at the origin and has radius 3
the small circle has a center that we want to find and has radius 1
give me one possible center for the center of the small circle
this one i don't think is hard but who knows

Answer 83

actually this one is pretty easy i think

Answer 84

1,1

Answer 85

oh wait let me say one more thing....

Answer 86

any think (a,a) like points may be

Answer 87

lol
nevermind :(

Answer 88

there is no constrain to judge the exact position

Answer 89

circle is tangent to the other circle

Answer 90

they only touch at one point
but nevermind this one is too easy

Answer 91

(2sqrt(2),2sqrt(2))

Answer 92

yes thats right

Answer 93

(sqrt(2),sqrt(2)) is also possible