OCR C2 2006 January — Question 2

Exam BoardOCR
ModuleC2 (Core Mathematics 2)
Year2006
SessionJanuary
TopicSine and Cosine Rules
2 Triangle \(A B C\) has \(A B = 10 \mathrm {~cm} , B C = 7 \mathrm {~cm}\) and angle \(B = 80 ^ { \circ }\). Calculate
  1. the area of the triangle,
  2. the length of \(C A\),
  3. the size of angle \(C\).
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