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`        If a+b+c=270 then find the value of sin2a-sin2b+sin2c`
5 months ago

Arun
23485 Points
```							Dear student 2 cos (A + B) sin (A – B) + 2 sinC cosC  = 2 cos (270 – C) sin (A – B) + 2 sinC cosC = 2 sin C ( – sin (A – B) + cos (270 – ( A+B)) = 2 sin C (  – sin ( A – B) – sin (A + B)) = – 4 sinA sinB sinC
```
5 months ago
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### Course Features

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