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Find ddθ(cosθsinθ)\frac { d } { d \theta } \left( \frac { \cos \theta } { \sin \theta } \right)

Question 70

Multiple Choice

Find ddθ(cosθsinθ) \frac { d } { d \theta } \left( \frac { \cos \theta } { \sin \theta } \right) .


A) 1sin2θ\frac { 1 } { \sin ^ { 2 } \theta }
B) 1sin2θ- \frac { 1 } { \sin ^ { 2 } \theta }
C) sinθcosθ- \frac { \sin \theta } { \cos \theta }
D) 1cos2θsin2θ1 - \frac { \cos ^ { 2 } \theta } { \sin ^ { 2 } \theta }

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