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`        Please  q no 8 and 9.                       Aaaaaa\\aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\aaa  `
5 months ago

Arun
23345 Points
```							 Dear student 8.) sin 12 sin (60-12) sin (60+12) sin 54 / sin 72 = sin (3 * 12) sin 54 / sin (90-18)  = sin 36 sin 54 / cos 18 = 2 sin 36 cos 36 / 2 cos 18 = sin 72 / 2 cos 18 = cos 18/ 2 cos 18 = ½ Hope it helps
```
5 months ago
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### Course Features

• 731 Video Lectures
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• Test paper with Video Solution

### Course Features

• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions