Q. What is the value of {[sin (x + y) – 2 sin x + sin (x – y)]/[cos (x – y) + cos (x + y) – 2 cos x]} × [(sin 10x – sin 8x)/(cos 10x + cos 8x)]?
A) tan2x
B) 0
C) 2 tan x
D) 1
✔ Correct Answer: tan2x
Exam Insight
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A) tan2x
B) 0
C) 2 tan x
D) 1
✔ Correct Answer: tan2x
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