- みんなの回答 (1)
- 専門家の回答
質問者が選んだベストアンサー
(1) 2*(2*cos(30°))=2*(2*√3/2)=2*√3=3.464 (2) 2 (3) 0 (4) 2*sin(30°)=2*(1/2)=1 (5) 2*cos(30°)=2*√3/2=√3=1.732 (6) 3 (7) 1.732 (8) √(3^2+(√3)^2=√9+3=√12=2√3=3.464
(1) 2*(2*cos(30°))=2*(2*√3/2)=2*√3=3.464 (2) 2 (3) 0 (4) 2*sin(30°)=2*(1/2)=1 (5) 2*cos(30°)=2*√3/2=√3=1.732 (6) 3 (7) 1.732 (8) √(3^2+(√3)^2=√9+3=√12=2√3=3.464