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What's the answer for these 2 questions? Please show working for everything. Pre-Calculus 12 Unit 6 Test A On-Line Course 11n 2. Determine the exact

What's the answer for these 2 questions? Please show working for everything.

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Pre-Calculus 12 Unit 6 Test A On-Line Course 11n 2. Determine the exact value of sin using sum or difference identities. 12 2) 2 marks 2 marks 3 3. If angle A is in quadrant III and Angle B is in quadrant IV and cos A = - UIIN and sin B = 5 Determine the exact value of sin (A - B)

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