What is the value of cosθ given that (−2, 9) is a point on the terminal side of θ ? 985√85 −985√85 285√85 −285√85​

r = √ [ x^2 + y^2 ] = √ [ ( -2)^2 + 9^2 ] = √85

r = √ [ x^2 + y^2 ] = √ [ ( -2)^2 + 9^2 ] = √85

r = √ [ x^2 + y^2 ] = √ [ ( -2)^2 + 9^2 ] = √85 cos θ = -2 / √85 = -2√85 / 85

r = √ [ x^2 + y^2 ] = √ [ ( -2)^2 + 9^2 ] = √85 cos θ = -2 / √85 = -2√85 / 85

-2√85√85

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the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

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