ȫǿɽʡʵѧ2017-2018ѧһѧпѧ

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'ȫǿɽʡʵѧ2017-2018ѧһѧпѧ'
ɽʡʵѧ2017-2018ѧȵڶѧп⣨һ꼶ѧI͹60֣һѡ⹲12СÿС560?ÿСĸѡֻһ ǷĿҪ.ry1. ֪750 <cr<800,ôǣ2A.һ޽ B.ڶ޽ C.޽ 0.޽2. gλôĸȷǣһ һ f һ 2 2A. a-b B. a-h = \ C. a Ab D. a =h3.aձһPsin 25,cos25㣩,aһֵǣA. 65B. -65C. 115D. 1554.֪ABCDı߳Ϊ1,AB = a, BC = b, AC = c, a + b + c ()A.B.C. 2a/2D. 3cos555A.B.V6+V2_4-V6-V24sin a + cos a С6.֪ =2,sina 2cosa tan a+I 4دֵΪA. 51D.-57 .Ϊ˵õy = cos 2x + - , xw RͼֻѺy = cos 2x, xw Rͼе㣨A.أƽƁAλ6C.أƽƁAλ3B.D.XƽƁAλ6rrأƽһλ68 ?AABCGΪAB = a,AC = b,AG = c^2ߵǣ A. a-bB. 2a + 2bC.a + 2bD. ci-2b9.֪/x = sin7169XH 3د2>0),/(ܲ/(n/(x)71 71СֵֵѪֵΪ( )14B. 3C.ɫ310. AABCȷĸ(2D.-3?AB-AC = BC  AB + BC + CA = O۵0Ϊ\ABC(OB-OC)\OB + OC-2OA)= 0f\ABCΪ;@AC AB>0,\ABCΪ.A. 1 B. 2 C. 3 D. 411. AABCMBCеNACAN = 2NC, AMBNڵP,AP = AAM ,AֵΪ , 2 3 4A. 4 B. C. D.3 5 512. \ABCһO,3OA + 4OB + 5OC = b,>J \OBCMBC֮Ϊ A. 1:4 B. 4:5 C. 2:3 D. 3:5II(90)(ÿ520ڴֽ)13. ֪=(2,3)/ = (-4,0),ڷϵͶӰΪ ?14. ߳Ϊ2ĵȱAABCMΪBCϵһAM(AB + XC)= ( 15./(%) = log, cos 2x-ĵΪ 3 I 6د16./أ= sinx + cosx,gx = sinx?cosx + ,ֱx = t,te [0԰/(x)^(x)ͼֱڵPQ,PQֵ (⹲6С70?Ӧд˵֤̻㲽?) 17.֪ƽd,,c,ҡ = 1,21뷽ߵĵλɵ;(2) c4,^D?ļнΪ&COS&.18. (1)sin(Q + 0)?cosasin(a + 0)-sin0(2)֪COS3a .711 6د5<2 ),cos aֵ.19.֪/أ=Asin0أ+0, xe R A>0,e>0,-V0V0 Һ/أͼأᣨ2أ \Ľ֮ľΪ2ͼһ͵ΪM ,-2 ,3د1 /أĽʽ;2 /أͼأƽܸλٽͼϸĺ̵ԭ+ 겻õgxͼgxxefo,-ʱֵ.I 2د20.֪A(4,0),B(0,4),C(3cosa,3sina).(1)(0,2)>|Xc| = |bc|, a ֵ;2́A˵2sin% + sin2a1 + tanֵ.躯/(أ)=G ?+ V^cos 2x.һ 21?֪d= 2cos x ,һ1I I 6دد1/أĵ;= -,0<a<^f // 7i a 1 5>(4 2)32/ֵ.Ծһѡ1-5:ADCCB6-10: CABBA11 12 DA13.8V131314. 615.ӑ+T*z316.-217.𰸡š㡿н㡾ѶȡС1??? ҹ???=1,2=أ2أ???Ϊλ,???ͬ=1,??? x2 +(2x)2 = 1.?.X = -= ҵΪ۶,5 5 5(2)(a + 2c)?(a-c)= a(d + 2c) = a2 _ - -2+ 4a?c + 4 c =5 + 5 = 10,52 2a-c^һ 2 --a 2a?c +һ 2c =5 +5 254_TI a +??? cos 3 =a + 2c52VlOx- 10218.𰸡lsin0 2_34㡿ͲǹʽǵĹ Ѷȡsin(1)ԭʽ sin(G + 0)?cosa-*?2cos(2" + 0 + 0)(2G + 0-0) =sin (a + 0) ? cos a һ cos=sin(0 + 0-0)= sin 0(2) v ae ,7i ,7171OC G6أ57Ti,
  
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