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Trigonometric Ratio and Identites question

2020 · 8 Jan · Shift 2 · Q29
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Trigonometric Ratio and Identites question

2020 · 8 Jan · Shift 2 · Q29

JEE MainMathematicsTrigonometric Ratio and IdentitesNumerical+4 / −1
If 2sin⁡α1+cos⁡2α=17{{\sqrt 2 \sin \alpha } \over {\sqrt {1 + \cos 2\alpha } }} = {1 \over 7}1+cos2α​2​sinα​=71​ and 1−cos⁡2β2=110α,β∈(0,π2)\sqrt {{{1 - \cos 2\beta } \over 2}} = {1 \over {\sqrt {10} }}\alpha ,\beta \in \left( {0,{\pi \over 2}} \right)21−cos2β​​=10​1​α,β∈(0,2π​) then tan(α\alphaα + 2 β\betaβ) is equal to ‾\underline{\hspace{2cm}}​.
Numerical answer
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