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Use a Sum or Difference Identity to Find the Exact cot⁡θ\cot \theta

Question 129

Multiple Choice

Use a sum or difference identity to find the exact value.
-Find cot⁡θ\cot \theta if tan⁡θ=73\tan \theta = \frac { \sqrt { 7 } } { 3 } and θ\theta is in quadrant III.


A) 377\frac { 3 \sqrt { 7 } } { 7 }
B) −32- \frac { 3 } { 2 }
C) 54\frac { 5 } { 4 }
D) −79- \frac { \sqrt { 7 } } { 9 }

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