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(1) when k = 2, it is composed of P (0 0,0,2) and A (2 2,0,0), and PA = (2 2,0,0? 2)、BC=(？ 2,? 2，0)、PB=(0，2，？ 2)
Let the normal vector of plane PBC be praised and trampled. 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 has not been solved, please describe your problem in detail and provide free professional consultation through Baidu Law Professional Edition. Other similar questions 2017-09-21(2014? As shown in the figure, in the regular triangular prism ABC-a1b1c1,e and f are the midpoint of BB 1 and AC respectively. (1) verification: BF∑ plane a1EC; ; 2320 16- 1 1-24(20 12? As shown in the figure, in the quadrilateral P-ABCD, the quadrilateral ABCD is a diamond, PA=PC, and E is the midpoint of PB. (1) Verification: AE72016-12-01(2065438) Shanghai Simulation) As shown in the figure, in the quadrangular cone P-ABCD, the bottom ABCD is rectangular, and the PA⊥ plane ABCD. E is the midpoint of Pb. 22016-12-0/Nanjing second model) As shown in the figure, in the quadrangular pyramid P-ABCD, the bottom ABCD is a right-angled trapezoid, and ad∨BC, PB⊥ plane ABCD, CD ⊥. Pb = ab = a52016-12-0/(2008) As shown in the figure, in the O-ABCD of the four-corner cone, the bottom ABCD is a square with a side length of 2, OA⊥ bottom ABCD, OA=2, and m is as shown in the figure, which is known. (1) Tangents A 1C and 120 16-65438+. The second mode in Songjiang District) When the triangular prism ABC-a 1B1c1∠ ACB = 90, AA1= 2, AC=BC= 1, then the non-planar straight line A/. As shown in the figure, in the quadrangular cone P-ABCD, the bottom ABCD is rhombic, and the plane ABCD of PA⊥, AB= 1, Pa? AC= 1, ∠ABC=θ (more similar questions? & gt recommended for you: F.context('cmsRight', [{'URL':'/d01373f082025aaf511aa256e9edab64034f1a07? 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 = 1720078022；