Question

sec16.cosec74-cot74.tan16=?

Answer 1

Answer:

$\sec(16) . \ \csc(74) - \cot(74) . \tan(16) \\ \csc(90 - 16) . \csc(74) - \cot(74) . \cot(90 - 16) \\ \csc(74) . \csc(74) - \cot(74) . \cot(74) \\ { \csc }^{2} 74 - { \cot }^{2} 74$

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