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Prachisourav Mohapatra

· started a discussion

· 1 Months ago

same question in single set (Question: 115618.0 )

86,97 are same,so irrensponsible.

Question:
The value of  \(\cfrac{1+tan\ 75^o}{1-tan\ 75^o}\)    is:
Options:
A) \(-\cfrac{2}{\sqrt[]{3}}\)
B) \(\sqrt[]{3}\)
C) \(-\sqrt[]{3}\)
D) \(\cfrac{1}{\sqrt[]{3}}\)
Solution:
Ans: (c) 

\(\cfrac{1+tan\ 75^0}{1-tan\ 75^0}\ \ = \ \ \cfrac{tan\ 45^0+tan \ 75^0}{1-tan45^0 tan75^0}\)

\(= \ tan(45^0+75^0)\)

\(= \ tan\ 120^{0} \)

\(= -\ \sqrt[]{3}\)

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
Thank you for your response , we will fix it.
But the given answer and solution is correct.

Thanks and Regards
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