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```
Sin24degree cos6degree-sin6degree sin66segree/sin21degree cos39degree- cos51degree sin69degree
Sin24degree cos6degree-sin6degree sin66segree/sin21degree cos39degree- cos51degree sin69degree

```
2 years ago

mansi hedav
13 Points
```							=(cos66cos6-sin6sin66)/(cos69cos39-sin39sin69)   {using fourmula of sin(90-$\Theta$)}=cos(66+6)/cos(69+39)   {using fourmula of cos(c+d)}=cos72/cos108= -1
```
2 years ago
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• 31 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions