Question

sin(-270)

Answer 1

Go to your calculator set it to radian mode. Solved.

Answer 2

You should get 1

Answer 3

Or covert it to \(\frac{3\pi}{4}\)

Answer 4

sin(-x) = -sinx
you should know the value of sin(270).. these are standard values..
if you dont, you could graph sin(x). http://intmstat.com/trigonometric-graphs/10sinx.gif looks like this.. so sin(270) or sin(3pi/4) is -1..
so sin(-270)=1..

Answer 5

Or...
sin(-270) = sin (360 - 270) = sin 90 = ...

Answer 6

Oh yeah.