Q. What is the simplified value of (cosec A + sin A)(cosec A – sin A)?
A) 2 cos2A
B) cos2A + cot2A
C) 2 cos A cot A
D) 2 cot2A
✔ Correct Answer: cos2A + cot2A
Exam Insight
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A) 2 cos2A
B) cos2A + cot2A
C) 2 cos A cot A
D) 2 cot2A
✔ Correct Answer: cos2A + cot2A
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