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Mathematics 13 Online
OpenStudy (anonymous):

Find the exact value of arctan (sin (pi/2)) For full credit, explain your reasoning.

OpenStudy (shamil98):

pi/4

OpenStudy (anonymous):

but why is it pi/4? How do you find it? @shamil98

OpenStudy (anonymous):

Sin(pie/2)=1... U should know this by heart per the unit circle. Then u have arctan(1). This asks at what value is tan=1? Tan=sin/cos. so when do sin and cos have the same value? This is pie/4

OpenStudy (anonymous):

okay I think I understand now.

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