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<p dir="ltr">arc tan {sin (arc cos<sup>√2⁄<sub>√3 </sub>)} সমান </sup></p><p> </p><p dir="ltr"> </p>
A
<p><img src="http://www.sothik.com/files/model-test/du-20216/image023.png" alt="" /></p>
B
<p><img src="http://www.sothik.com/files/model-test/du-20216/image024.png" alt="" /></p>
C
<p><img src="http://www.sothik.com/files/model-test/du-20216/image025.png" alt="" /></p>
D
<p><img src="http://www.sothik.com/files/model-test/du-20216/image026.png" alt="" /></p>
Answer: D - <p><img src="http://www.sothik.com/files/model-test/du-20216/image026.png" alt="" /></p>
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