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Mathematics 17 Online
OpenStudy (christos):

Inverse trigonometric functions, Can you please help me solve this exersise ? http://screencast.com/t/j98tQ6lhv2Z1

OpenStudy (mathstudent55):

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OpenStudy (mathstudent55):

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OpenStudy (mathstudent55):

\(\sin \theta = -\dfrac{3}{4} \)

OpenStudy (mathstudent55):

\( \sec \theta = \dfrac{1}{\cos \theta} \)

OpenStudy (mathstudent55):

For the angle \(\theta \) in the figure, what is \( \cos \theta \) ?

OpenStudy (christos):

3/4 ?

OpenStudy (christos):

oh wait in the figure

OpenStudy (mathstudent55):

yes

OpenStudy (christos):

- 3/ 4

OpenStudy (christos):

I found 4/sqrt(7) for a

OpenStudy (mathstudent55):

You need to find the other leg of the triangle.The cos function is the adjacent leg over the hypotenuse.

OpenStudy (christos):

is it correct ??

OpenStudy (christos):

I stole a formula from the internet

OpenStudy (christos):

http://screencast.com/t/k50LmVraq

OpenStudy (mathstudent55):

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