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bhobarnob

· started a discussion

· 1 Months ago

didn't understand (Question: 274714.0 )

plz explain anybody if u understood the soln.

Question:

  

Options:
A)

sec θ

B)

tan θ

C)

cot θ

D)

cos θ

Solution:

Ans: (b)

  

Rajan

· commented

· 1 Months ago

alternative solution:
take θ=60
x comes out to be 1/√3
put this value in 2x/(1-x^2)
you will get √3
now from options for θ=60
only B option i.e Tanθ gives you √3 which is correct answer
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