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X Sam Antenucci\'s Home Page × X Precalculus B: Semester Exam Graphing Rose Cur

ID: 2913087 • Letter: X

Question

X Sam Antenucci's Home Page × X Precalculus B: Semester Exam Graphing Rose Cur -) ? Ole secure! https://www.connexus.com/content/chrome/online/lessonviewer.aspx?he esson 2: Semester Exam recalculus B Unit 8: Semester Review and Exam y=2"-61-1 24. Which is a polar form of the following parametric equations? (1 point) y-4 sin 8 cos 25. Find limx-20 ( point) 05 o0 26. What is the equation of the line tangent to the function (x)-2x2+3x at the point (-2.2)? (1 point) y-5x+8 y-4x +3 27. Determine if there are zero, one, or two triangles for the following: (4 points) 1266 7

Explanation / Answer

1) x = 4 sin^2 theta

y = 4 sin theta cos theta

r^2 = x^2 + y^2

r^2 = ( 4 sin^2 theta )^2 + ( 4 sin theta cos theta )^2

r^2 = 16 sin^4 theta + 16 sin^2 theta cos^2 theta

= 16 sin^2 theta ( sin^2 theta + cos^2 theta )

= 16 sin^2 theta (1)

r^2 = 16 sin^2 theta

r = 4 sin theta

last option is correct