Trigonometric ratios of angles in radians

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Examples
Lessons
  1. Find the value
    1. sin π3 {\pi \over 3}
    2. cos 3π4 {{3 \pi} \over 4}
    3. tan 7π6 {{7 \pi} \over 6}
    4. sin 11π6 {{11 \pi} \over 6}
    5. sec 8π3 -{{8 \pi} \over3}
    6. sec 8π3 -{{8 \pi} \over3} shortcut
  2. Determine one positive angle and one negative angle that is coterminal with:
    1. θ=5π6\theta ={{5 \pi} \over 6}
    2. θ=8π3\theta = - {{8 \pi} \over 3}
  3. Use a calculator to determine the value of the trigonometric ratios:
    1. sin 123°
    2. sin 123 123
    3. cos 200 -200
    4. tan 13π7 {{13 \pi} \over 7 }
    5. sin π\pi
    6. sin π\pi °
    7. sec 500 °