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Grade 10Trigonometry

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

Profile image of Mahak Mudatkar
6 Years agoGrade 10
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2 Answers

Profile image of Arun
6 Years ago
Dear student
 
What is the question part. Please check and repost the question. You can also attach an image.
Profile image of Vikas TU
6 Years ago
Dear student 
Question is not clear 
Please attach an image, 
We will happy to  help you 
Good Luck
Cheers

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