Saved Bookmarks
| 1. |
\operatorname { tan } A = \sqrt { 2 } - 1 , \text { show that } \frac { \operatorname { tan } A } { 1 + \operatorname { tan } ^ { 2 } A } = \frac { \sqrt { 2 } } { 4 } |
|
Answer» now sinAcosA = √2/4 =>( sinA./cosA)*cos A*cosA = √2/4=> tanA.cos²A = √2/4 => tanA/(sec²A) = √2/4=> tanA/(1+tan²A) = √2/4 |
|