Cos(x) & Unit Circle - Radians의 복사본

Kids do not make the connections that angles in radians are numbers in decimals and that their trigonometric values are also numbers in decimals. Kids do not understand that [math]\frac{\pi}{4} \approx 0.785[/math] and that [math]\cos(\frac{\pi}{4})=\cos(0.785) \approx 0.707[/math] . Kids do not understand that [math]\frac{\pi}{2} \approx 1.5[/math] . (Okay it is 1.6 but 1.5 is good enough for a decent graph.) They do not understand that [math]\cos(\frac{\pi}{6}) \approx \cos(0.524) \approx 0.866[/math] and that [math]\cos(\frac{\pi}{3}) \approx \cos(1.047)=0.5[/math]

 

조효철

 
Resource Type
Activity
Tags
circle  unit-circle 
Target Group (Age)
15 – 18
Language
English (United Kingdom)
 
 
 
© 2024 International GeoGebra Institute