Question: 2. 13 Given that sina = - where a is in quadrant II, determine the exact value of sin 20 3. Given that cosa =

2. 13 Given that sina = - where a is in quadrant II, determine the exact value of sin 20 3. Given that cosa = = v = where a is in quadrant I, and sin B = = where & is in quadrant II, determine the exact value of cos(a - p)

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