Question

Find the general.solution of 4sin²x-3=0

Answer 1

Answer:

$4( {sin}^{2} x - 3 )= 0 \\ \\ 4( {cos}^{2} x- 1) - 3 = 0 \\ \\ 4 {cos}^{2} x - 4 - 3 = 0 \\ \\ 4 {cos}^{2} x - 7 = 0 \\ \\ 4 {cos}^{2} x = 7 \\ \\ {cos}^{2} x = \frac{7}{4} \\ \\ cosx = \frac{ \sqrt{7} }{ \sqrt{4} } \\ \\ cosx = \frac{ \sqrt{7} }{2} .$

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Step-by-step explanation:

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