Biased: I’m going to vote for savanna because she’s my best friend
Unbiased: I’m going to vote for Stacy because she is the best candidate for the school’s treasurer
Hello,
cos 160°=-q
cos 20°=-cos 160°=q
sin 20°=√(1-q²)=sin 160°
tan -20°=tan 160=√(1-q²)/-q
cos 70°=sin 20°=√(1-q²)
