= (If 4 sine 3, find the value of x.)
[tex] \sqrt{cosec { \alpha \alpha }^{2} - cot {}^{2} \alpha \div sec {}^{2} - 1 } + 2cot \alpha = \sqrt{7 \div x} + cos \alpha .find \: the \: value \: of \: x. \\ \\ [/tex]
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