(sin A + cos A) (tan A + cot A) = sec A + csc A

any help would be great!

(sin A + cos A) (tan A + cot A) = sec A + csc A

any help would be great!

any help would be great!

- Martingale
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Expand the left hand side and write everything in terms of sine and cosine.(sin A + cos A) (tan A + cot A) = sec A + csc A

any help would be great!