∴∠ADB=90，
∴ in Rt△ABD is obtained by Pythagorean theorem.
AD2=AB2-BD2
∫B(3，4)，
∴OD=3,BD=4.
AB = 5，
∴AD2=25- 16，
∴AD=3，
∴tan∠BAD=43.
②∫AD = 3，OD=3，
∴OA=6，
∴A(6,0),O(0,0)
∴0=c0=49×36？ +6b+c
∴b=？ 83c=0
The analytical formula of ∴ parabola is: y = 49x2? 83x
∴y=49(x3)2？ 4,
∴M(3,-4).
(3)∫M(3，-4)，B(3，4)，
∴OB=OM，
∵BD⊥OA,OD=AD，
∴OB=AB=5，
∴OM=5.
When △ABO∽△MQO, AOMO=BOOQ
∴65=5OQ，
∴OQ=256，
∴Q(256,0)
△ABO∽△QMO，AOQO=BOMO
∴ 6QO = I praised it and stepped on it. What is your evaluation of this answer? Put away comments//high quality or satisfaction or special types or recommended answers dottimewindow.iperformance & window.iperformance.mark ('c _ best',+newdate); Lawyer recommendation service: If your problem is not solved, please describe your problem in detail and provide free professional consultation through Baidu Legal Pro. Other similar questions 2021-12-21(2012? A model in Putuo District) as shown in the figure, trapezoidal OABC, BC∨OA, with side OA on the positive semi-axis of X axis and side OC on the positive semi-axis of Y axis 202 1-03-25. As shown in the figure, right-angled OABC has side OA on the positive semi-axis of X axis and side OC on the positive semi-axis of Y axis, and the coordinate of point B is (1, 3). ! As shown in the figure, trapezoidal OABC, BC‖OA, with side OA on the positive semi-axis of X axis and side OC on the positive semi-axis of Y axis, point B (3 3,4), AB = 5.202010-12-26. As shown in the figure, it is known that the edge OA of the right-angled trapezoidal OABC is on the positive semi-axis of the Y axis and OC is on the positive semi-axis of the X axis. As shown in figure 36420 14-05- 14, the right-angle OABC is in the plane rectangular coordinate system xoy, with point A on the positive semi-axis of the X axis and point C on the positive semi-axis of the Y axis, OA = 4, OC = 3,402012-1. 62011-0/-kloc-0/3 As shown in the figure, the two sides OC and OA of the rectangular AOCB are located on the X axis and the Y axis respectively, and the coordinates of point B are B (-20/3,5), 504201/kl. & gt Recommended for you: Why is the cost of cancer treatment getting higher and higher? What impact will the "network toilet" have? The price of electric cars has dropped many times. Is the quality guaranteed? Is Huaqiang North's second-hand mobile phone reliable? Baidu legal pro-free legal service recommends super 3w professional lawyers, 24-hour online service, with an average of 3 minutes to reply to free appointments. Online lawyers guide professional lawyers to complete one-on-one communication at any time, waiting for your answer? Change and help more people? Download Baidu Know APP and grab a fresh experience. Know the APP with Baidu and grab a fresh experience immediately. There may be answers that others want to know in the camera of your mobile phone. Scan QR code to download illegal and harmful information about personal and corporate infringement complaints. Please select and submit a category below.
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