Question

Find all solutions of sinx-(√1-3sin²x)=0

Answer 1

${( \sin(x) )}^{2} \: = 1 - 3 {( \sin(x) )}^{2} \\ = > 4 { (\sin(x)) }^{2} \: = 1 \\ = > \sin(x ) = + (1 \div 2) \: or \: - (1 \div 2) \\ = > x = (\pi \div 6) \: \: or \: \: ( - \pi \div 6)$
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