You can put this solution on YOUR website! Cot𝈚=-2/9.
Recall that cot𝈚=1/tan𝈚
1/tan𝈚=-2/9.
Cross multiplying,we have
9x1=-2tan𝈚
9=-2tan𝈚
9/-2=tan𝈚
-4.5=tan𝈚
tan𝈚=-4.5
𝈚=arctan(4.5)
𝈚=77.45
𝈚 approx. 77.5(1dp)
cos𝈚 > 0.
Cos77. 5 > 0.
O.216 > 0.True
Follow the same PREMISE used for this problem thatw's used in the problem below: Trigonometry-basics/1174583
Given that sin θ > 0, and sec/cos θ < 0, 0 is found in Quadrant 2.
We then have: