How to apply constraints for trig problems

The video tutorial discusses constraints in relation to the unit circle and coordinate points in quadrants. It explains how to apply constraints to triangles and understand the roles of sine and cosine in different quadrants. The tutorial emphasizes the importance of knowing the signs of coordinates in each quadrant and how these relate to constraints.

What should you do when given a point not on the unit circle?

• Ignore the point

• Create a triangle

• Use a calculator

• Estimate the coordinates

In which quadrant are both x and y coordinates positive?

• Quadrant 1

• Quadrant 2

• Quadrant 4

• Quadrant 3

Which quadrant has a negative x coordinate and a positive y coordinate?

• Quadrant 1

• Quadrant 3

• Quadrant 2

• Quadrant 4

If the sine of an angle is greater than zero, which quadrants could it be in?

• Quadrants 1 and 4

• Quadrants 3 and 4

• Quadrants 2 and 3

• Quadrants 1 and 2

Which quadrant satisfies both sine and cosine being greater than zero?

• Quadrant 3

• Quadrant 4

• Quadrant 1

• Quadrant 2