'Use half-angle formula find the exact value 8 1€ 8 5'
Added by Wendy L.
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The half-angle formula for sine is: $$\sin(\frac{x}{2}) = \pm\sqrt{\frac{1 - \cos(x)}{2}}$$ Now, we are given the angle $x = 8^\circ 15'$. We need to convert this to decimal degrees: $$x = 8^\circ + \frac{15'}{60'} = 8^\circ + \frac{1}{4}^\circ = 8.25^\circ$$ Show more…
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