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amruta1997
 3 years ago
how to find value of sin 18.......plz explain in detail
amruta1997
 3 years ago
how to find value of sin 18.......plz explain in detail

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Rezz5
 3 years ago
Best ResponseYou've already chosen the best response.0without the use of the calculator?

Rezz5
 3 years ago
Best ResponseYou've already chosen the best response.0taylor expansion can estimate it for you

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0i did not get what u want to say

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0sauravshakya u may try

Rezz5
 3 years ago
Best ResponseYou've already chosen the best response.0Taylor Expansion is the way of estimating and function sinx is \[x\frac{ x ^{3} }{ 6 }+\frac{ x ^{5} }{ 120 } ...+...\]

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.15*18=90 sin(5*18)=sin90 Let x=18 then, sin(5x)=sin90

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0i think u r wrog somewhere

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1U can proceed from here but this will be too long but it will give u exact value.

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0we dont have a formula for sin 5 thete

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1From sin(5x)=1 u need to find the value of sinx

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0i mean to say we dont have its expansion

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1sin(5x) = sin(2x + 3x) = sin2x * cos3x + cos2x * sin3x

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0hmmmmm that wd be 22 long

gohangoku58
 3 years ago
Best ResponseYou've already chosen the best response.15x= 90 2x+3x=90 3x=902x sin 3x= cos 2x now put formula of sin 3x and cos 2x in terms of sin x only.

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0hmmmmmm this wd b an easy one

Rezz5
 3 years ago
Best ResponseYou've already chosen the best response.018=Pi/10 sin(Pi/10)=0.3090169944 F[x]\[=x\frac{ x ^{3} }{ 6 }+\frac{ x ^{5} }{ 120 }... \] f[Pi/10]==0.3090170542 you decide

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0but when we will solve the quadrtic equation then we will get two values of sin theta

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1@gohangoku58 's one

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1because that gives exact value not approximate

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0hmmmmm but two values

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1well, sin 18 lies in first quadrant so take positive value

gohangoku58
 3 years ago
Best ResponseYou've already chosen the best response.1u'll get a cubic equation, with one root = 0 (can't be, rejected) and 2 other roots.....from which u select one with positive value..... like saura said...

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0i failed 2 use common sence

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0no not a cubic but a quadratic u try it

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0i tried it jjust now

gohangoku58
 3 years ago
Best ResponseYou've already chosen the best response.13sinx4 sin cube x<cubic

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0no but sin 2 x is also there

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0then we can take sin in common

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1no u cant 1 is there

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0r u there on facebook

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0sorry for the personal Q

gohangoku58
 3 years ago
Best ResponseYou've already chosen the best response.1we both are there...

sauravshakya
 3 years ago
Best ResponseYou've already chosen the best response.1dw:1353245978780:dw

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0we can contact there also

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0saura i will tell u wait

gohangoku58
 3 years ago
Best ResponseYou've already chosen the best response.14 x^3  2 x^2  3x + 1 = 0 one root is x=1 which can't be.... i made a typo earlier and wrote that one root is 0

amruta1997
 3 years ago
Best ResponseYou've already chosen the best response.0sin 2 theta = cos 3 theta.................sin (90theta)=costheta
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