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3.10 Applications of the cosine rule

Interactive practice questions

While playing school football, Luke kicks the ball towards the $2$2 m wide goal when he is $2.9$2.9 m from one post and $3.3$3.3 m from the other post.

Find the size of the angle, $x$x, in which Luke can score a goal, correct to the nearest degree.

Easy
2min

A pendulum of length $76$76 cm swings a horizontal distance of $44$44 cm. What is the value of angle $x$x swept by the pendulum, to the nearest degree?

Easy
2min
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Outcomes

MS2-12-3

interprets the results of measurements and calculations and makes judgements about their reasonableness, including the degree of accuracy and the conversion of units where appropriate

MS2-12-4

analyses two-dimensional and three-dimensional models to solve practical problems

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