Math 124 Lines, Circles and Tangents.pdf - JIAYI QIN Math 124 section C Fall 2017 Instructor Ebru Bekyel WebAssign Math 124 Lines Circles and

# Math 124 Lines, Circles and Tangents.pdf - JIAYI QIN Math...

• 3
• 100% (5) 5 out of 5 people found this document helpful

This preview shows page 1 - 2 out of 3 pages.

Current Score : 21 / 21 Due : Thursday, September 28 2017 11:45 PM PDT 1.4/4 points | Previous AnswersConsider the circle of radius 10 centered at the origin. Provide answers accurate to two decimal places.(a) The equation of the tangent line to the circle through the point (-6,8) has equationy=0.75 0.75x+12.5 12.5(b) Suppose that Lis a tangent line to this circle which is parallel to the line y=5x+7and has anegative yintercept. Then the point of tangency of Lwith this circle is (9.81 9.8058,-1.96 -1.9612).2.8/8 points | Previous AnswersDraw the unit circle and plot the point P=(8,2). Observe there are TWO lines tangent to the circlepassing through the point P. Answer the questions below with 3 decimal places of accuracy. (a) The line L1is tangent to the unit circle at the point (-0.121 -0.123,0.993 0.992(b) The tangent line L1has equation:y=0.125 0.124x +1 1.01(c) The line L2is tangent to the unit circle at the point (0.358 0.358,-0.934 -0.934).(d) The tangent line L2has equation: . ). . .
• • • 