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CBSE Class 9 Answered

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Asked by pnthisdp33 | 25 Jul, 2018, 19:21: PM
answered-by-expert Expert Answer
begin mathsize 16px style the space question space is space sin to the power of 8 straight x plus cos to the power of 8 straight x equals open parentheses sin to the power of 4 straight x close parentheses squared plus open parentheses cos to the power of 4 straight x close parentheses squared equals open parentheses sin to the power of 4 straight x minus cos to the power of 4 straight x close parentheses squared plus 2 open parentheses sin to the power of 4 straight x cross times cos to the power of 4 straight x close parentheses equals open parentheses open parentheses sin squared straight x plus cos squared straight x close parentheses open parentheses sin squared straight x minus cos squared straight x close parentheses close parentheses squared plus 2 open parentheses sin to the power of 4 straight x cross times cos to the power of 4 straight x close parentheses equals open parentheses open parentheses sin squared straight x minus cos squared straight x close parentheses close parentheses squared plus 2 open parentheses sin to the power of 4 straight x space cos to the power of 4 straight x close parentheses equals sin to the power of 4 straight x plus cos to the power of 4 straight x minus 2 open parentheses sin squared straight x space cos squared straight x close parentheses plus 2 open parentheses sin to the power of 4 straight x space cos to the power of 4 straight x close parentheses equals open parentheses sin squared straight x close parentheses squared plus open parentheses cos squared straight x close parentheses squared minus 2 open parentheses sin squared straight x space cos squared straight x close parentheses plus 2 open parentheses sin to the power of 4 straight x space cos to the power of 4 straight x close parentheses equals open parentheses open parentheses sin squared straight x plus cos squared straight x close parentheses squared minus 2 sin squared straight x space cos squared straight x close parentheses minus 2 open parentheses sin squared straight x space cos squared straight x close parentheses plus 2 open parentheses sin to the power of 4 straight x space cos to the power of 4 straight x close parentheses equals 1 minus 4 open parentheses sin squared straight x space cos squared straight x close parentheses plus 2 open parentheses sin to the power of 4 straight x space cos to the power of 4 straight x close parentheses end style
Answered by Arun | 26 Jul, 2018, 14:21: PM

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