Move the green point to form a central angle of 1 radian. What is the sign of sin(1)?
Move the green point to form a central angle of 2 radians. What is the sign of sin(2)?
Move the green point to form a central angle [math]\pi[/math] radians. What is the sign of sin([math]\pi[/math])?
Move the green point to form a central angle 5 radians. Which of the following is true?