Question

Need Help on Math Pleasseee.

Answer 1

okiiiiiiiiii

Answer 2

hope you can see that

Answer 3

@snowflake0531 will help instead

Answer 4

It's really odd how they don't simplify the fractions as the choices, since we would usually write \(\frac{1}{\sqrt{2}}\) as \(\frac{\sqrt{2}}{2}\) but okay

I hope you know your unit circle, because that'll come in handy, if you can memorize all the 30 and 45 degree angles around the circle, including 225, you'll know that the coordinate is \((-\frac{\sqrt{2}}{2},-\frac{\sqrt{2}}{2})\)
A coordinate written in the unit circle is \( (cos,sin)\), and so you know that \(cos(225) = -\frac{\sqrt{2}}{2}\) and \(sin(225)=-\frac{\sqrt{2}}{2}\)

I know by now you should be able to get your answer, but it's also good to know that \( tan(\theta) = \frac{sin(\theta)}{cos(\theta})\)


and by the way, so the answer you chose is correct

Answer 5

and here's a nice image of the unit circle, remember the coordinates are (cos,sin)

Answer 6

thank you

Answer 7

yw~