Answer:
Yes
Step-by-step explanation:
1) Cos 300 = Cos (360 - 60) = Cos 60 {Cos 360 - theta = Cos theta}
= 1/2
Sin 300 = Sin (360 - 60) = -Sin 60 = [tex]\frac{-\sqrt{3}}{2}[/tex]
3) 3π/4 = 3*180/4 = 135
Cos 135 = Cos (90 + 45) = -Cos 45 = [tex]\frac{-\sqrt{2}}{2}[/tex]
Sin 135 = Sin (90 + 45) = Sin 45 = [tex]\frac{\sqrt{2}}{2}[/tex]
