Rewrite as a positive acute angle. Tan (-100 degrees)
\[\tan \left( -100 \right)=-\tan 100=-\tan \left( 180-80 \right)=-\left( -\tan 80 \right)\]=?
thankyou! also can you like explain the steps? because i really don't understand when my teacher teaches it
\[\tan \left( -\theta \right)=-\tan \theta \] |dw:1393174179525:dw| Theta in 4th quadrant,so tan theta is negative.
what does theta mean
100 in 2nd quadrant ,so tan theta is positive. \[Also~\tan \left( 180-\theta \right)=-\tan \theta .\]
and also what does each quadrant represent
as shown above there are four quadrants. |dw:1393174519727:dw|
ANGLE 0 to 90 ,1st quadant. 90 to 180 ,2nd quadrant, 180 to 270 ,3rd quadrant. 270 to 360 ,4th quadrant.
Yea but does each quadrant have a specific trig function
|dw:1393188449679:dw|
Join our real-time social learning platform and learn together with your friends!