In Rt△AOC, AC=5, OA= 1, then OC=2,
The coordinates of point C are (0,2).
Let the analytical formula of tangent BC be y=kx+b,
It passes through points c (0 0,2), b (-4,0),
And then b = 2? 4k+b=0，
The solution is k = 12b = 2,
∴y= 12x+2；
(2) As shown in figure 1, the coordinate of point G is (a, c).
∫ point g is on a straight line y= 12x+2,
∴c= 12a+2，
If the intersection point G is GH⊥x axis and the vertical foot is H point, then OH=a and GH=c= 12a+2 connect AP and Ag.
∵AC=AP, AG=AG, so Rt△ACG≌Rt△APG? (HL)，
∴∠AGC= 12× 120 =60。
At Rt△ACG,
∫∠AGC = 60, AC= praised and trampled. What's your comment on this answer? Put away your comments and recommend lawyer services: If your problem is not solved, please describe your problem in detail and provide free professional consultation through Baidu Legal Pro. Other similar problems 20 11-04-01are known: As shown in the figure, A intersects C and D on the Y axis, and the coordinates of the center of the circle A are (1,0. Pass through point C and make the tangent of ⊙A intersect the X axis at point B 1082020-02- 15. Draw a circle with point (2,0) as the center and 3 as the radius. The coordinates of the intersection of this circle and the horizontal axis are () 520 16- 12-. As shown in the figure, in the plane rectangular coordinate system xOy, the coordinate of point A is (2,0), and the circle with radius 2 centered on point A intersects with the X axis 620 17-09- 13. As shown in the figure, ⊙A and Y axis intersect at points C and D, and the coordinate of center A is (65438). Let ⊙A320 15-0 1-24 pass through point C. As shown in the figure, a circle with a center of G(0, 1) and a radius of 2 intersects with X axis at points A and B, and Y axis at points C and D. Point E is an 820655 on χ G. If ∞. 3 Draw a circle with this as the radius, and the coordinate of the intersection of this circle and the horizontal axis is () 6. Let me recommend it to you: especially F.context('cmsRight', [{'URL':'/d 01373f082025aaf51aa 256e9edab64034f1a07? x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto '，' contractId':'A24KA00562 '，}，{ ' URL ':/s？ word = % E6 % AC % A7 % E6 % B4 % B2 % E6 % 9D % AF & sa = searchpromo _ ozb _ zhidao _ tuijian '，' src ':'/3 BF 33 a 87 e 950352 AAF 5 df 4954 143 fbf2b 2 1 18 b6b？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto '，' contractId ':' '，}])； Is Huaqiang North's second-hand mobile phone reliable? 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? I recommend f.context ('recbrand', [{"img": "\/86D6277F9E2F07083523F69DFB 24B 899A901F20d? x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 450% 2Ch _ 600% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto "，" url":"/hm.js？ 6859 ce 5a af 00 FB 00387 e 6434 E4 FCC 925 "； var s = document . getelementsbytagname(" script ")[0]； s.parentNode.insertBefore(hm，s)； })(); window . TT = 1720 140509；