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Krish

· started a discussion

· 1 Months ago

No option available (Question:86857.0)

Wrong options

Question:
If tan α = n tan β and sin α = m sin β then cos2 α is:
Options:
A) \(\cfrac{m^2}{n^2+1}\)
B) \(\cfrac{m^2}{n^2}\)
C) \(\cfrac{m^2-2}{n^2-1}\)
D) \(\cfrac{m^2+1}{n^2+1}\)
Solution:

Ans: (c) 


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