The sine of an angle is the - 

$$y$$-coordinate of P on the triangle formed inside the unit circle.

The cosine of an angle is the - 

$$x$$-coordinate of P on the triangle formed inside the unit cirlce.

The tangent is the - 

line that intersects the circle exactly once.

1 - 

$$\cos(0°)$$

$$\frac{\sqrt{3}}{2}$$ - 

$$\cos(30°)$$

$$\frac{\sqrt{2}}{2}$$ - 

$$\cos(45°)$$

0.5 - 

$$\cos(60°)$$

0 - 

$$\cos(90°)$$

-0.174 (3 s.f) - 

$$\cos(100°)$$

Pythagoras' theorem - 

$$a^2+b^2=c^2$$

The sine rule - 

$$\frac{a}{\sin(A)}=\frac{b}{\sin(B)}=\frac{c}{\sin(C)}$$

The cosine rule - 

$$a^2 = b^2+c^2-2bc\cos(A)$$

Area of a triangle - 

$$\frac{1}{2}ab\sin(C)$$

10.6 cm - 

$$a=8$$ cm, $$B=36$$° and $$c=16$$ cm

11.8 cm - 

$$a=16$$ cm, $$B=36$$° and $$c=20$$ cm

4.9 cm - 

$$a=8$$ cm, $$B=36$$° and $$c=8$$ cm

12.2 cm - 

$$a=8$$ cm, $$B=72$$° and $$c=12$$ cm

46.57° - 

$$a=8$$ cm, $$b=12$$ cm and $$c=16$$ cm

36.87° - 

$$a=16$$ cm, $$b=12$$ cm and $$c=20$$ cm

97.18° - 

$$a=8$$ cm, $$b=12$$ cm and $$c=8$$ cm

70.53° - 

$$a=8$$ cm, $$b=12$$ cm and $$c=12$$ cm