Question

Cot a minus tan a equals to 2 cos square a equals 1 by sin a cos theta

Answer 1

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$\cot \: a - \tan \: a \: = \frac{ {2 \cos }^{2}a }{ \sin \: a \: \cos a }$

$\frac{ \cos \: a }{ \sin \: a} - \frac{ \sin \: a }{ \cos \: a }$

$\frac{ { \cos }^{2}a( - { \sin }^{2}a) }{ \sin \: a \: \cos \: a }$

$\frac{ { \cos }^{2}a + { \cos }^{2}a - 1 }{ \sin \cos \: a }$

$\frac{2 { \cos}^{2} a - 1 }{ \sin \: a \: \cos \: a }$

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Answer 2

Step-by-step explanation:

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