SantanaG
Which function's graph is shown below?
A. y = sin x
B. y = cos x
C. y = sin x
D. y = cos x



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SantanaG
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UnkleRhaukus
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which do you think? @SantanaG?

SantanaG
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I have no idea :(

baldymcgee6
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Try using some numbers, it might help.

SantanaG
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like what #s though?

UnkleRhaukus
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can you find the sine of 0 ?

baldymcgee6
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Like that :)

SantanaG
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is sine of 0, 0?

UnkleRhaukus
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yes

UnkleRhaukus
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what about the cosine of zero ?

SantanaG
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1?

UnkleRhaukus
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goood,
looking at the graph , we see the line passes through the origin ,
which two options does this eliminate?

SantanaG
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the cosine ones b/c it equals 1

UnkleRhaukus
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ok good, so we have to choose between y= sin x, y= sin x

SantanaG
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yepp :)

Luigi0210
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sinx

UnkleRhaukus
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can you find the sine of π/2

SantanaG
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yeah hold on plz

SantanaG
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sine of pi/2=0

UnkleRhaukus
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nope,

UnkleRhaukus
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\[\sin(π/2)=\]

SantanaG
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1

SantanaG
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sorry

UnkleRhaukus
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thats better

UnkleRhaukus
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so we have these points dw:1359689543363:dw

UnkleRhaukus
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dw:1359689628038:dw

SantanaG
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so it is y=sin(x)

UnkleRhaukus
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dw:1359689692221:dw

UnkleRhaukus
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correct

SantanaG
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Sweet! thanks! :)