Factor; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent.
$$\cot ^ { 2 } \alpha - \cot ^ { 2 } \alpha \cos ^ { 2 } \alpha$$
A) $\cos ^ { 2 } \alpha$
B) $1 - \sin ^ { 2 } \alpha$
C) $\tan ^ { 2 } \alpha$
D) $\sin ^ { 2 } \left( \frac { \pi } { 2 } - \alpha \right)$
E) $\frac { 1 } { \sec ^ { 2 } \alpha }$

Question

Quizplus · Accepted Answer

The Answer of Factor; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent.
$$\cot ^ { 2 } \alpha - \cot ^ { 2 } \alpha \cos ^ { 2 } \alpha$$
A) $\cos ^ { 2 } \alpha$
B) $1 - \sin ^ { 2 } \alpha$
C) $\tan ^ { 2 } \alpha$
D) $\sin ^ { 2 } \left( \frac { \pi } { 2 } - \alpha \right)$
E) $\frac { 1 } { \sec ^ { 2 } \alpha }$

Factor; Then Use Fundamental Identities to Simplify the Expression Below cot⁡2α−cot⁡2αcos⁡2α\cot ^ { 2 } \alpha - \cot ^ { 2 } \alpha \cos ^ { 2 } \alphacot2α−cot2αcos2α

Factor; Then Use Fundamental Identities to Simplify the Expression Below $\cot ^ { 2 } \alpha - \cot ^ { 2 } \alpha \cos ^ { 2 } \alpha$