Given that x = 7.4 m and θ = 31°, work out BC rounded to 3 SF
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59.0

Step-by-step explanation:

c=31

b=90

90+31=121

180-121=59

56 rounded to the nearest 3 sf=59.0

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12.333 m

Step-by-step explanation:

The ratio x/BC is the tangent of angle theta:

 7.4

= tan theta = 0.6

 BC

                                                                         7.4

Interchanging 0.6 and BC, we get    BC =   = 12.333 m

                                                                          0.6

probability for j is 1/4

while

a is 1/6