1 Press Ctrl-A ©G Dear2008 – Not to be sold/Free to use Sine Ratio Stage 4 Year 9

2 Hypotenuse Opposite Opposite Click Sin θ = OppositeHypotenuse θ θ Trig Ratios

Sin θ = OppositeHypotenuseP QR 5 Sin P = Sin R = 5 13 Trig Ratios

4 26 P Q R 10 Sin A = A B 5 C Sin P = = 22222222 Sin C = 5 13 Sin R = = 5 13 22222222 24 Trig Ratios Sin θ = OppositeHypotenuse

o m sin 30 o = m 6 6x x6 m = 6 x sin 30 o = 3 Use your Calculator! Trig Ratios Sin θ = OppositeHypotenuse

o d sin 60 o = d 10 10xx10 10 x sin 60 o ≈ 8.66 Use your Calculator! d = Trig Ratios Sin θ = OppositeHypotenuse

7 k 40 o 6 sin 40 o = 6 k kx xk = 6 k x sin 40 o ≈ 9.33 Use your Calculator!  Sin 40 o  Sin 40 o k = 6  sin 40 o Trig Ratios Sin θ = OppositeHypotenuse

8 12 zozozozo 6 sin z o = 6 12 zo =zo =zo =zo = sin -1 ( ) Use your Calculator! = 30 o 612 Trig Ratios Sin θ = OppositeHypotenuse

9 15 momomomo 5 sin m o = 5 15 mo =mo =mo =mo = sin -1 ( ) Use your Calculator! ≈ 20 o 515 To nearest whole degree Trig Ratios Sin θ = OppositeHypotenuse

10 S Some O Old H Hags C Can A Always H Hide T Their O Old A Age S Sin O Opposite H Hypotenuse C Cos A Adjacent H Hypotenuse T Tan O Opposite A Adjacent