Fort Thomas Independent Schools

Q1: π 6 Q4: 11π 6 . EX: Find the exact value of cos -1 (- 1 2 ) . Q2: 2π 3 Q3: π+ π 3 = 4π 3 . EX: Find the exact value of arctan(1). ... Cosine is (-) in Q2 and Q3. Our calculator gives the smallest angle possible. Q2: 1.927. The reference angle is pi-1.927=1.214. To find the Q3 solution, add pi … ................
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