Question

$cos \alpha = \frac{1 }{2}$

$sin \alpha = \frac{1}{4}$
поможіть !!!)

Answer 1

1)@=+-arccos(1/2)+2pik

@=+-pi/6+2pik

2)@=arcsin(1/4)+2pik  @=pi-arcsin(1/4)+2pik