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Bijit Sarkar

· started a discussion

· 1 Months ago

Ambiguous Step (Question: 246611.0 )

The last step does not make sense!

Question:
Find the value of \(\cfrac{sec^2\ 70^o-cot^2\ 20^o}{2(cosec^2\ 59^o\ - tan^2\ 31^o)}\)  
Options:
A) 1
B) 4
C) \(\cfrac{1}{2}\)
D) 3
Solution:
Ans: (c)


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