Problem:
Simplify the following expression $\left(-4 \left(\cos \left(\frac{43}{30}\right)+i \sin \left(\frac{43}{30}\right)\right)\right)^2$
Answer:
$16 \left(\cos \left(\frac{43}{15}\right)+i \sin \left(\frac{43}{15}\right)\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/complex_raised_to_exponent/3787.txt'}