Q. What is the simplified value of (sec A + cos A)(sec A – cos A)?
A) 2 sin2 A
B) 2 tan2A
C) sin2A + tan2 A
D) sin2 A tan2 A
✔ Correct Answer: sin2A + tan2 A
Exam Insight
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A) 2 sin2 A
B) 2 tan2A
C) sin2A + tan2 A
D) sin2 A tan2 A
✔ Correct Answer: sin2A + tan2 A
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