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Munagala Janardhana Reddy

· started a discussion

· 1 Months ago

solution (Question: 257146.0 )

(m-n)=2sin@ ; (m+n)=2tan@
mn =((sin^2@)(tan^2@)) ==> (sin@)(tan@)=(mn)^(1/2)
then
(m-n)(m+n)=((m^2)-(n^2))=4(sin@)(tan@)=4(root(mn))

Question:

  .

Options:
A)

2mn    

B)

4mn    

C)

m - n

D)

2 mn

Solution:

Ans: (a)

  

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