9.12 Use sine ratio to calculate angles and side (Sin = oh \frac{o}{h} )

Use sine ratio to calculate angles and side (Sin = oh \frac{o}{h} )

One of the trigonometric ratios is sine ratio. It is the opposite side over the hypotenuse of right triangles. In other words, we can find the angles and sides of right-angled triangles by using the sine ratios.

Lessons

    • a)
      sin60\sin 60^\circ
    • b)
      sin60\sin-60^\circ
    • a)
      sinθ=0.57\sin \theta =0.57
    • b)
      sinθ=0.65\sin \theta = -0.65
  • 4.
    Determine the angles and sides using Sine ratio
  • 5.
    Draw and label a right triangle to illustrate tangent ratio, then calculate the angle.
Teacher pug

Use sine ratio to calculate angles and side (Sin = oh \frac{o}{h} )

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