Question
Convert each complex number to rectangular form.$4\left(\cos 75^{\circ}+i \sin 75^{\circ}\right) \quad$ Hint Use the addition formulas from Section 8.1 to evaluate $\cos 75^{\circ}$ and $\sin 75^{\circ}$
Step 1
The addition formulas are: \[\cos(a+b) = \cos a \cos b - \sin a \sin b\] \[\sin(a+b) = \sin a \cos b + \cos a \sin b\] Show more…
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Convert each complex number to rectangular form. $4\left(\cos 75^{\circ}+i \sin 75^{\circ}\right) \quad$ Hint: Use the addition formulas from Section 9.1 to evaluate $\cos 75^{\circ}$ and $\sin 75^{\circ} .$
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