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Mathematics 19 Online
OpenStudy (anonymous):

If sin > 0 and tan < 0 then: a. 0 degrees < theta < 90 degrees b. 90 degrees < theta < 180 degrees c. 180 degrees < theta < 270 degrees d. 270 < theta < 360 degrees

OpenStudy (***[isuru]***):

do u know about the quadrants..? i mean the 1st quadrant , 2nd quadrant , 3rd quadrant and 4th quadrant... ?

OpenStudy (anonymous):

no.

OpenStudy (***[isuru]***):

according to the period that an angle belongs it can be divided in to 4 quadrants |dw:1392231001215:dw|

OpenStudy (anonymous):

okay...?

OpenStudy (***[isuru]***):

and in each quadrant.... specific set of trigonometric ratios will become positive...while the others become negative

OpenStudy (anonymous):

okay which ones?

OpenStudy (***[isuru]***):

|dw:1392231147166:dw|

OpenStudy (anonymous):

so how do i get an answer. i'm confused on how to used that to find my answer/

OpenStudy (***[isuru]***):

the question says that sin > 0 which means sin is (+) and tan < 0 which means tan is (-) in which quadrant will this happen ?

OpenStudy (anonymous):

2nd?

OpenStudy (***[isuru]***):

yes!!... and the range of the second quadrant is ?

OpenStudy (anonymous):

90 - 180?

OpenStudy (***[isuru]***):

|dw:1392231518783:dw|

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