Saved Bookmarks
| 1. |
2 \theta \text { is } - a ) - \frac { 4 } { 3 } , b ) \frac { 4 } { 3 } , c ) \frac { 4 } { 5 } , d ) - \frac { 4 } { 5 } |
|
Answer» tant=3so cost=1/root(9+1)=1/root(10)cos2t=2cos^2t-1=2(1/root(10))^2-1 =2(1/10)-1=1/5-1=-4/5 |
|