Trig identities: Pythagorean, symmetry and periodicity, and sum and difference
Grade 11 Math Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
On Noah's unit circle worksheet, θ is in Quadrant II and sin θ = 3/5. What is cos θ?
Pia's robot ends a turn θ in Quadrant IV with cos θ = 5/13. What is sin θ?
On Ren's unit circle worksheet, θ is in Quadrant III and sin θ = -8/17. What is cos θ?
Esme's robot ends a turn θ at (-3/5, 4/5) on a unit circle floor grid. Where does a turn of -θ end?
On Jun's unit circle worksheet, the turn θ ends at (-7/25, -24/25). Where does the turn -θ end?
Kira's robot ends a turn θ at (8/17, -15/17) on a unit circle floor grid. Where does a turn of -θ end?
Luz's robot ends a turn θ at (12/13, 5/13) on a unit circle floor grid. Where does a turn of 90° − θ end?
On Milo's unit circle worksheet, the turn θ ends at (3/5, 4/5). Where does the turn 90° − θ end?
Noah's robot ends a turn θ at (-15/17, 8/17) on a unit circle floor grid. Where does a turn of 90° − θ end?
On Pia's unit circle worksheet, the turn θ ends at (24/25, -7/25). Where does the turn 90° − θ end?