Find the exact value of trigonometric ratios

Find the exact value of trigonometric ratios

Lessons


trigonometric ratios: SOH CAH TOA
  • 1.
    Find the exact value of all six trigonometric ratios, then make a conclusion
    which primary trigonometric ratios (sin θ,cosθ,tanθ \theta , cos \theta, tan \theta) are positive in each
    quadrant
    a)
    θ \theta=30°

    b)
    θ \theta =120°

    c)
    θ \theta =225°

    d)
    θ \theta=300°