The Cosine Rule

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Question 21

Three towns $A, B$ , and $C\,$ form a triangle. The distance between $A\,$ and $B\,$ is 30 km, the distance between $B\,$ and $C\,$ is 45 km, and the distance between $A\,$ and $C\,$ is 60 km. The angle at town $B\,$ is labeled $α∘\alpha^\circ$ .

Work out the value of $α\alpha$ .

Give your answer to 1 decimal place.

[3]

The Cosine Rule

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Question 21

Three towns $A, B$ , and $C\,$ form a triangle. The distance between $A\,$ and $B\,$ is 30 km, the distance between $B\,$ and $C\,$ is 45 km, and the distance between $A\,$ and $C\,$ is 60 km. The angle at town $B\,$ is labeled $α∘\alpha^\circ$ .

Work out the value of $α\alpha$ .

Give your answer to 1 decimal place.

[3]

The Cosine Rule

Question 21

The Cosine Rule Questions

The Cosine Rule

Question 21

The Cosine Rule Questions