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SOUMISTHA PAUL

· started a discussion

· 1 Months ago

about value (Question: 197136.0 )

How the value of sin & cos came as- 2/root5 and 1/root5???plz explain...

Question:
If \(\cfrac{sin\theta + cos\theta}{sin\theta - cos\theta}\) = 3, then the value of (sin4\(\theta\) – cos4\(\theta\)) is –
Options:
A) \(\cfrac{1}{5}\)
B) \(\cfrac{2}{5}\)
C) \(\cfrac{3}{5}\)
D) \(\cfrac{4}{5}\)
Solution:
Ans: (c)


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