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Unformatted text preview: a2
or cos A =
2 bc 1.
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13. Given a c
A b C Given b = 2 cm
a = 4 cm
b = 7 cm
a = 5 cm
a = 6 cm
a = 3 cm
a = 4 cm
a = 12 cm
b = 3.5 cm
a = 7.8 cm
a = 10.2 cm
a = 7.4 cm
a = 8 cm c = 3 cm
b = 6 cm
c = 9 cm
c = 8 cm
b = 7 cm
b = 5 cm
b = 2 cm
b = 5 cm
c = 4.7 cm
c = 5.3 cm
b = 6.4 cm
b = 9.6 cm
b = 10 cm 14. Given a = 4.8 cm b = 7.1 cm c = 5.5 cm 15.
16. Given a = 8.5 cm
a = 17.1 cm b = 13.2 cm
b = 28.6 cm 17. The goalposts in football are 7.32 metres apart. A ball is placed on the ground
8 metres from one goalpost and 6 metres from the other. Within what angle must
the ball be kicked along the ground in order to score? 18. Two people start walking from the same place at the same time.
They are walking on level ground. One walks at 4 kilometres an hour going due North,
and the other walks at a speed of 3.5 kilometres an hour going Northeast.
After 3 hours, how far apart will they be? 19. The principal 'legs' of a stepladder are usually of two different length...
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 Spring '14

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