\(\cfrac{4}{sec^2\theta}+\cfrac{1}{1+cot^2\theta}+3sin^2\theta\) এর মান -----
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\(\cfrac{4}{sec^2\theta}+\cfrac{1}{1+cot^2\theta}+3sin^2\theta\) এর মান 4
\(\cfrac{4}{sec^2\theta}+\cfrac{1}{1+cot^2\theta}+3sin^2\theta\)
\(=4cos^2\theta+\cfrac{1}{cosec^2\theta}+3sin^2\theta\)
\(=4cos^2\theta+ sin^2\theta+3sin^2\theta\)
\(= 4sin^2\theta+4cos^2\theta\)
\(= 4(sin^2\theta+cos^2\theta)\)
\(= 4 \)

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