Mathematics · Trigonometry
Select the correct trigonometric identity from the following options.
- 11 + sec2 A = tan2 A
- 21 + tan2 A = sec2 A✓
- 31 + sin2 A = cos2 A
- 41 + cos2 A = sin2 A
Correct answer
1 + tan2 A = sec2 A
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