Find the area of the figure.
From what i know of, you would have to count the units to get your sides. Although when I did my answer was wrong. So please help.

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

The area of a circle is equal to 1 dm². find the radius of the circle.