Trigonometry Warmup
Know the trig ratios!
In the unit circle, r = 1, so the trig ratios
in the unit circle are…
Using SOH-CAH-TOA:
sin θ
=
csc θ
=
sin θ
=
csc θ
=
cos θ
=
sec θ
=
cos θ =
sec θ
=
tan θ
=
cot θ
=
tan θ
=
cot θ
=
Know the Pythagorean Theorem!
Know the Quadrants!
 “All students take calculus” is a way to
remember…
Know angles!
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

Know




Positive angles
Negative angles
Reference angles
Don’t know these? We will get to them
in the notes today!
angle measures!
Degrees are based on 360 subdivisions of a circle.
Radians are based on the circumference relationship of a circle.
Be able to convert angle measures
Know the values in degrees and radians of the axes from standard position.
Know the ordered pairs form the unit circle!
Angle in Degrees Angle in Radians
Ordered Pair
0
0°
30°

6
45°

4
60°

3
90°

2
180°
π
270°
3
2
***Page 406 in your book has a summary of the six trig functions’ values. Look at it!
Know the Calculator!***
1. Label 45-45-90 triangle and rewrite 2nd triangle where hypotenuse is equal to 1.
45°-45°-90° Triangle
2. Label 30-60-90 triangle and rewrite 2nd triangle where hypotenuse is equal to 1.
30°-60°-90° Triangle