Saved Bookmarks
| 1. |
3. Evaluate:sin2 63°+ sin2 27°cos2 17 cos 73° |
|
Answer» =sin^2(90-27)+sin^227/cos^2(90-73)+cos^273=cos^227+sin^227/sin^273+cos^273now cos^2A+sin^2A=1hence1/1=1 |
|