网址:http://m.1010jiajiao.com/timu3_id_518546[举报]
(1)证明PQ⊥平面ABCD;
(2)求异面直线AQ与PB所成的角;
(3)求点P到平面QAD的距离.
(2)求异面直线AQ和PB所成的角;
(Ⅰ)证明PQ⊥平面ABCD;
(Ⅱ)求异面直线AQ和PB所成的角;
(Ⅲ)求点P到平面QAD的距离.