Question
In $3-44,$ find the exact value.$$\left(\cos 60^{\circ}\right)^{2}+\left(\sin 60^{\circ}\right)^{2}$$
Step 1
We know from the unit circle that $\cos 60^{\circ} = \frac{1}{2}$ and $\sin 60^{\circ} = \frac{\sqrt{3}}{2}$. Show more…
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