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vera_ewing
 one year ago
Is the sine value negative or positive?
vera_ewing
 one year ago
Is the sine value negative or positive?

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vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0\[ \frac{ 5\pi }{ 3 }\]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2dw:1439321452729:dw \(\huge\color{green}{\rm CAST}\) rule

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2dw:1439321495330:dw sin is positive only in first and 2nd qudrant

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Is the sine value \[\frac{ 1 }{ 2 }\]

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Or \[\frac{ \sqrt{3} }{ 2 }\]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2solution (x,y) where xcoordinate = cos and ycoordinate represent sin value

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0hint: \[\Large \frac{{5\pi }}{3} > \pi \]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2and i would convert radian to degree i like degrees ...

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0So the sine value is \[\frac{ 1 }{ 2 }\]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2(x ,y) xcoordinate = cos ycoordinate = sin

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0more precisely: \[\Large 2\pi > \frac{{5\pi }}{3} > \frac{{3\pi }}{2}\]

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Or is the sine value \[\frac{ \sqrt{3} }{ 2 }\]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2you tell me which one is it ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2look at my first drawing sin is negative in 4th and 3rd qudrant

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Wait, so the sine value is negative?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.25pi/3 is in which quadrant ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2right so in 4th quadrantdw:1439321901039:dw only cos is POSITIVE

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.2like in 3rd quadrant only tan is positive cos and sin are negative

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0So the sine value of 5pi/3 is \[\frac{ \sqrt{3} }{ 2 }\]

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1@Nnesha  great diagram!!!

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1if you want a mnemonic to remember ACTS  its 'All Cats Taste Sour ' I know that's horrible but you won't forget it!

vera_ewing
 one year ago
Best ResponseYou've already chosen the best response.0Thanks @welshfella lol :)
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