Math, asked by xbtanishkaraskar55, 1 day ago

please tell this 76th question
options are also available but explain me how to solve it ​

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Answers

Answered by senboni123456
1

Step-by-step explanation:

We have,

 \left|  \begin{array}{cc} \tt  {cot( \theta) } & \tt{cosec( \theta)} \\  \tt{cosec( \theta)}& \tt{cot( \theta)}\end{array} \right|  \\

  =  \tt  {cot ^{2} ( \theta) -   cosec^{2} ( \theta)}

 = -  1

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