মান নির্ণয় কর :\(sec^2 60° – cot^2 30° – \cfrac{2tan30° cosec60° }{1+tan^2⁡ 30°} \)



\(sec^2 60° – cot^2 30° – \cfrac{2tan30° cosec60° }{1+tan^2⁡ 30°} \)
\(=(2)^2-(√3)^2- \cfrac{2× \cfrac{1}{√3}× \cfrac{2}{√3}}{1+\left( \cfrac{1}{√3}\right)^2} \)
\(=4-3- \cfrac{ \cfrac{4}{3}}{1+ \cfrac{1}{3}}\)
\(=1- \cfrac{ \cfrac{4}{3}}{ \cfrac{3+1}{3}}\)
\(=1- \cfrac{ \cfrac{4}{3}}{ \cfrac{4}{3}}\)
\(=1-1\)
\(=0 \)(Answer)

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