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Grade 12th passTrigonometry

Solve:
sin3x
Answer:
(pi(8n-1/4,2pin) U (pi(8n+1/4,pi(8n+3/4) U (pi+2pin,pi(8n+5/4) .

Profile image of Sarthak Agrawal
10 Years agoGrade 12th pass
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2 Answers

Profile image of Sarthak Agrawal
10 Years ago
question is sin 3x is less than sin x
Profile image of Anil Kumar
10 Years ago
sin3x=sin(2x+x)
         =sin2xcosx+cos2xsinx=2sinxcosxcosx+(cos2x-sin2x)sinx=2sinxcos2x+sinxcos2x-sin3x
approve if the answer is correct
 

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