平面[img=129x22]18038072794df72.png[/img] 与平面[img=137x22]180380728203283.png[/img]的夹角( )
A: [img=11x39]180380728b12971.png[/img]
B: [img=11x39]1803807292b2768.png[/img]
C: [img=11x39]180380729aef609.png[/img]
D: [img=11x39]18038072a38a540.png[/img]
A: [img=11x39]180380728b12971.png[/img]
B: [img=11x39]1803807292b2768.png[/img]
C: [img=11x39]180380729aef609.png[/img]
D: [img=11x39]18038072a38a540.png[/img]
举一反三
- 曲线[img=112x75]1803b6444829680.png[/img]在点[img=55x25]1803b644505e474.png[/img]处的切线与x轴正向所成的角度是( ) A: [img=11x39]1803b644587a690.png[/img] B: [img=11x39]1803b6446101a6c.png[/img] C: [img=11x39]1803b64468d1da7.png[/img] D: [img=11x39]1803b644705131f.png[/img]
- 曲线[img=53x22]1802e68f7413eeb.png[/img]与直线[img=143x22]1802e68f7e4f61e.png[/img]所围成的图形绕 x 轴旋转一周而成的旋转体的体积为( ) A: [img=11x39]1802e68f8729acb.png[/img] B: [img=11x39]1802e68f8fc839c.png[/img] C: [img=11x39]1802e68f986d68d.png[/img] D: [img=11x39]1802e68fa14c209.png[/img]
- 曲线[img=53x22]1802e6c758b66e3.png[/img]与直线[img=143x22]1802e6c76157ae4.png[/img]所围成的图形绕 x 轴旋转一周而成的旋转体的体积为( ) A: [img=11x39]1802e6c76a5fb81.png[/img] B: [img=11x39]1802e6c7736f0e4.png[/img] C: [img=11x39]1802e6c77c27bea.png[/img] D: [img=11x39]1802e6c784bb267.png[/img]
- 两平面[img=119x22]18039631b3fa00d.png[/img]和[img=119x22]18039631bca6c72.png[/img]的夹角为( ) A: [img=11x39]18039631c4f652b.png[/img] B: [img=11x39]18039631cda819c.png[/img] C: [img=11x39]18039631d569529.png[/img] D: [img=11x39]18039631dcda055.png[/img]
- 7.二平面[img=17x17]1803636bb87680e.png[/img]:[img=107x22]1803636bc111644.png[/img],[img=107x21]1803636bc9e5918.png[/img],夹角[img=28x19]1803636bd22cf5d.png[/img]( ) A: [img=11x39]1803636bd9f24c2.png[/img] B: [img=11x39]1803636be1f1152.png[/img] C: [img=11x39]1803636beaa98d2.png[/img] D: [img=11x39]1803636bf3f459f.png[/img]