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Q1: π 6 Q2: π- π 6 = 5π 6 . EX: Find the exact value of sin -1 3 . No Solution. We can NOT take the arcsine or arccosine of a value greater than 1. ... Use a calculator to approximate arctan (4.84) *Recall, tangent is positive in Q1 and Q3. Q1: 1.367. To find the Q3 angle, simply add pi. ................
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