book Maths Puzzle Numerical Ability

how do I find all solutions for this equation.
2 sin x + square root of 3 = 0

Thank you so much in helping me to get ahead before going back to school in the fall.

sta

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book Other Question

________ >2.5 2.45 + 2.25

_________ <4.5 8 - 2.3
4.5 - 0.1

Which of the three go wi
how do u work out a pecentage of a number such as 5% of 80 or 25& of 100
i already know the easy ones like 50& and 25% but what are the other ones?