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 one year ago
If sinA=5/6, where angle A is in Quadrant 1, find the exact value of sin (1/2A)
 one year ago
If sinA=5/6, where angle A is in Quadrant 1, find the exact value of sin (1/2A)

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NoelGreco
 one year ago
Best ResponseYou've already chosen the best response.0I assume that's sin (.5A). There is a halfangle formula for sin.

missbdoll
 one year ago
Best ResponseYou've already chosen the best response.0so can you please help me solve the problem?

ajprincess
 one year ago
Best ResponseYou've already chosen the best response.1\[\cos^2A+\sin^2A=1\]\[\cos A=\sqrt{1\sin^2A}\] From this \(\cos A\) can be found u can find \(\cos A\). Then use \[\cos A=12\sin^2(\frac{ 1 }{ 2 }A)\]\[\sin \frac{ 1 }{ 2 }A=\sqrt{\frac{ 1\cos A }{ 2 }}\] from this u can find \[\sin \frac{ 1 }{2}A\] Does that help?

missbdoll
 one year ago
Best ResponseYou've already chosen the best response.0but do u have an answer?

Notamathgenius
 one year ago
Best ResponseYou've already chosen the best response.0Mine is at the very top

missbdoll
 one year ago
Best ResponseYou've already chosen the best response.0did u use the halfangle formula because i'm getting a radical?

missbdoll
 one year ago
Best ResponseYou've already chosen the best response.0dw:1364227944196:dw

ajprincess
 one year ago
Best ResponseYou've already chosen the best response.1dw:1364228079352:dwdw:1364228136955:dw dw:1364228182827:dw

missbdoll
 one year ago
Best ResponseYou've already chosen the best response.0is that the complete answer?

missbdoll
 one year ago
Best ResponseYou've already chosen the best response.0ok thank you so much

ajprincess
 one year ago
Best ResponseYou've already chosen the best response.1Welcome:) do u get it?
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