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Use the cosine rule to find the value of a. Give your answer rounded to 1 decimal place.
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dspchosenangle = question.score feedback.none Expected answer: m
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To find the value of a we need to use the cosine rule.
We need to use the angle opposite a
a2=1.82+12−2×1.8×1×cos(32.27°)
Take the square root of both sides:
a=√1.82+12−2×1.8×1×cos(32.27°)=1.1 m
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