SOLUTION: The posts of a hockey net are 1.8 m apart. A player tries to score a goal by shooting the
puck along the ice from a point that is 4.1 m from one goalpost and 3.5 m from the other
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-> SOLUTION: The posts of a hockey net are 1.8 m apart. A player tries to score a goal by shooting the
puck along the ice from a point that is 4.1 m from one goalpost and 3.5 m from the other
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Question 1173355: The posts of a hockey net are 1.8 m apart. A player tries to score a goal by shooting the
puck along the ice from a point that is 4.1 m from one goalpost and 3.5 m from the other
goalpost. Determine the measure of the angle that the puck makes with both goalposts. Draw
a labelled diagram. Answer by ikleyn(52834) (Show Source):
Use the Cosine law formula, which gives you
1.8^2 = 4.1^2 + 3.5^2 - 2*4.1*3.5*cos(a)
where "a" is the angle, you are seeking for.
From the formula, calculate cos(a); then find the angle "a" as arccos.
