Solving Trig Equations Core

45°=​ (a)   radians

These are the 45° family in quadrant order: ​ (b)  

30°=​ (a)   radians

These are the 30° family in quadrant order: ​ ​ (b)  

60°=​ ​ (a)   radians

These are the 60° family in quadrant order: ​ ​ (b)  

Put each radian angle in the proper column

Groups:

(a) 30° radian family

,

(b) 45° radian family

,

(c) 60° radian family

,

(d) Not in these families

• 30°
• 3 & 4
• 2 & 3
• 60°

• none - the angle is quadrantal
• 90°
• 45°

• none - the anglesi are quadrantal
• 90°
• 45°

• 30°
• 2 & 4
• 2 & 3
• 60°

Which has NO solution?