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anonymous
 one year ago
tanA+sqart3=0,sinA1/2=0,cosA+squrt3/2,secA1=0 . which one does not have solution in qurdrant 2 ?
anonymous
 one year ago
tanA+sqart3=0,sinA1/2=0,cosA+squrt3/2,secA1=0 . which one does not have solution in qurdrant 2 ?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i know i have to use the cast rule but still confused

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1first equation: \[\tan A =  \sqrt 3 \] we have the subsequent drawing: dw:1434998122110:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1as we can see one solution belongs to the II quadrant, and the oter one belongs to the fourth quadrant

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1secon equation: \[\sin A = \frac{1}{2}\] dw:1434998289606:dw here we have one solution which belongs to the first quadrant, and the second one which belongs to the second quadrant

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what about the cast rule ?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1third equation: \[\cos A =  \frac{{\sqrt 3 }}{2}\] dw:1434998435741:dw here we have one solution which belongs to the II quadrant, and the second one which belongs to the III quadrant

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1finally, fourth equation: \[\sec A = 1 \to \frac{1}{{\cos A}} = 1 \to \cos A = 1\] dw:1434998618085:dw here we have 2 solutions, namely the first one which is A=0, and then it belongs to the I quadrant, whereas the second one, which is A=360, belongs to the IV quadrant. So what can you conclude?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do u know how to do this without using the unit circle ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0my teacher did the cast rule and it was much faster , kinda forgot though

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! I know, we have to solve all of your four equations. Nevertheless I think that a graphical solution is the best solution

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1sorry, what is the cast rule?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0btw do u think the solution is thre last one ?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! That's right!
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