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ajprincessBest ResponseYou've already chosen the best response.2
\[\theta=\cos^{1}\frac{\sqrt3}{2}\] \[\cos\theta=\frac{\sqrt3}{2}\] So vat is the value of \(\theta\)? @msingh
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
well ya. but there is another value.
 11 months ago

apple_piBest ResponseYou've already chosen the best response.1
why do you need to find theta? It's just cos(A+B)
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
\[\cos(\frac{5\pi}{6}+\frac{\pi}{4})=?\]
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
nw as @apple_pi mentioned u can use \(\cos(A+B)=\cos A\cos B\sin A\sin B\).
 11 months ago

apple_piBest ResponseYou've already chosen the best response.1
@ajprincess why did you find theta? You could just leave it as acos(...), then cos(acos(...)) would cancel and then use pythagorus to find sin(acos(...))
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
well i found it easy to find theta first nd then do..:)
 11 months ago

apple_piBest ResponseYou've already chosen the best response.1
ok whatever suits you :p
 11 months ago

msinghBest ResponseYou've already chosen the best response.0
@ajprincess can u plse tell me exact answer
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
Well i am really sorry. I am nt supposed to give direct answers. pls check the code of conduct
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
dw:1367584877456:dw
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
plug in the values nd simplify
 11 months ago

msinghBest ResponseYou've already chosen the best response.0
yes, after this, i m getting cos(5pi/6)sin(5pi/6)
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
what is cos(pi/4)?
 11 months ago

msinghBest ResponseYou've already chosen the best response.0
oh again i did wroong i place 1 as it is 1/ root2
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
what are cos(5pi/6),sin(pi/4) and sin(5pi/6)?
 11 months ago

msinghBest ResponseYou've already chosen the best response.0
root3/2 1/root2 root3/2
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
first two values are right. chck the last one
 11 months ago

ajprincessBest ResponseYou've already chosen the best response.2
nw plug in those values and simplify
 11 months ago

msinghBest ResponseYou've already chosen the best response.0
i got (1/2root2)*(root31)
 11 months ago
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