How do you evaluate the trig expression sin(180°)?

I'm pretty sure you can only do it by calculator
Press the SIN button, open parentheses, 180, close parentheses,
And hit enter
Hope this helps :)

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20