Respuesta :

Answer:

[tex]B) sin(\alpha )[/tex]

Step-by-step explanation:

[tex]sin(90-0)=Cos(0)[/tex]

[tex]Cos(90-0)=sin(0)[/tex]

[tex]So...[/tex]

[tex]Cos(90-\alpha )= sin(\alpha )[/tex]

[tex]------------[/tex]

hope it helps...

have a great day!!

msm555

Answer:

cos(90°-a)

since it lies in first quadrant

sina

your option is B.sin(a)

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