Q42 · Practice questionTechnology-activeComplex familiar5 marks
QUESTION 42 (5 marks)
In triangle , m, m and . Determine and to one decimal place.
WORKED SOLUTION
5 marksPractice marking scheme
ANSWER
m and .
Worked solution
The cosine rule gives . Then the sine rule gives , so .
Uses the cosine rule correctly.
Determines m.
Sets up the sine rule for .
Determines .
Communicates both answers with appropriate units/precision.
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