Mathematics: [precalculus] find the value of sin(x/2):

[precalculus] find the value of sin(x/2): - id2635637, viktoria1198zz

Ответ:

Fangflora3

12.03.2022

Put your number into the half-angle formula and simplify.

$\displaystyle\sin{\frac{\theta}{2}}=\pm\sqrt{\frac{1-\cos{\theta}}{2}}=\sqrt{\frac{1-\frac{1}{3}}{2}}\\\\=\sqrt{\frac{1}{3}}=\sqrt{\frac{3}{9}}\\\\=\frac{\sqrt{3}}{3}$

The appropriate selection is ...

$A)\quad\dfrac{\sqrt{3}}{3}$

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[precalculus] find the value of sin(x/2):

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