1) To use the sine rule we need a) 2 sides and 1 angle b) 2 angles and 1 side c) either of the above d) neither of the above 2) To find an angle in a triangle using the sine rule we need a) the side opposite the angle and one other side and opposite angle b) 3 sides c) any 2 sides and any angle 3) The ambiguous case occurs when we are given a) 2 angles and 1 side b) 2 sides and a non-included angle c) 2 sides and the included angle 4) In the ambiguous case the smaller side is a) opposite the included angle b) opposite the non-included angle 5) In the ambiguous case we get two possible angles as our answer as sin is positive in the first and second quadrant. a) True b) False 6) To find an angle using the cosine rule we need a) 2 sides and an angle b) 3 sides 7) To find a side in a triangle using the cosine rule we need a) the opposite angle and 2 sides b) any angle and 2 sides c) 1 side and 2 angles

Sine and Cosine Rule

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