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Participation Activity #8 This is similar to Try It #1 in the OpenStax text. Given sin a = - , with a in quadrant III,

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Participation Activity #8 This is similar to Try It #1 in the OpenStax text. Given sin a = - , with a in quadrant III, find cos (20). Enter the exact answer. sin (a) ? cos (20) = Hint Penalty Hint 0.0 View Hint

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