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Deepak

· started a discussion

· 1 Months ago

answer (Question: 86857.0 )

option dekhlo or answer bhi .. or thodi sharam aaj jaye toh agli baar error free test series lana wese ab main ek bhi test na buy karun

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) 


Shashank Shah

· commented

· 1 Months ago

well said
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