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Mathematics 13 Online
OpenStudy (kj4uts):

The statement “cot θ= 12/5, sec θ=-13/5, and the terminal point determined by θ is in quadrant 4”: Would the answer be D.? Please help and explain. Thank you!

OpenStudy (kj4uts):

jimthompson5910 (jim_thompson5910):

yeah and also cot(theta) is negative in quadrant IV

jimthompson5910 (jim_thompson5910):

and if cot(theta) = 12/5, then sec(theta) = 13/12 so everything is just off on this problem

OpenStudy (kj4uts):

ok so it is d. im still a little confused on how to know this

jimthompson5910 (jim_thompson5910):

you have to know that sec(theta) = 1/cos(theta)

jimthompson5910 (jim_thompson5910):

and where cosine is positive and negative

jimthompson5910 (jim_thompson5910):

that helps you determine the sign for secant

OpenStudy (kj4uts):

oh ok so answer: D so the 4th. Q, cosines is +, therefore sec. must be +

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (kj4uts):

ok thank you again for your help

jimthompson5910 (jim_thompson5910):

np

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