Mathematics · Trigonometry
Evaluate the following expression in terms of simplified trigonometric ratios: sec A − tan Asec A ± tan A
- 11 + 2 tan2 A + 2 sec A tan A
- 21 + 2 tan2 A − 2 sec A tan A✓
- 31 + 2 sec2 A − 2 sec A tan A
- 41 + 2 sec2 A + 2 sec A tan A
Correct answer
1 + 2 tan2 A − 2 sec A tan A
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