Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\sec ^ { 2 } ( \tan ^ { - 1 } 2 ) + \operatorname { c o s e c } ^ { 2 } ( \cot ^ { - 1 } 3 )$$

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