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The unit circle: exact values of the six trigonometric functions — Homework

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The unit circle: exact values of the six trigonometric functions — Homework

Find the reference angle and quadrant first, then apply the special-angle magnitude with the correct sign.

  1. 1.State cos(pi/4) and sin(pi/4) exactly.
  2. 2.State cos(pi/3) and sin(pi/3) exactly.
  3. 3.Find cos(theta) and sin(theta) for theta = 3pi/2 (270 degrees).
  4. 4.Explain why sec(3pi/2) is undefined.
  5. 5.Find all six trig values at theta = 4pi/3 (240 degrees).
🌲 Homeschool of the FutureTwelfth Grade · Math · week 18 homework