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Sahil Bhyana

· started a discussion

· 1 Months ago

wrong ans given (Question: 115739.0 )

ans should be B

Question:
If \(\theta\) be an acute angle such that tan \(\theta\)= 1, then \(\cfrac{1-cos^4\theta}{cos^4 \theta}+\ \cfrac{1+sin^4\theta}{sin^4 \theta}\)   equals :
Options:
A) \((2^4-1)+\left ( \cfrac {9+2^4}{9} \right )\)
B) 11
C) 8
D) \(\cfrac{2^4-9}{9}+(2^4+1)\)
Solution:
Ans: (c)

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