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```
Given that - CosA + cos*2A = 1 CosA = 1 - cos*2A CosA = Sin*2A Now, put the value of cosA in R. H. S Sin*2A + sin*4A CosA + cos*2A Hence proved, LHS=RHS
Given that -CosA + cos*2A = 1 CosA = 1 - cos*2ACosA = Sin*2ANow, put the value of cosA in R. H. SSin*2A + sin*4A  CosA + cos*2AHence proved, LHS=RHS

```
9 months ago

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9 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