Q197
If A is an acute angle, the simplified form of ( - A ). ( /2 + A ) ( - A ) ( + A ) ( 3 2 + A ) ( 2 - A )\, is:
If A is an acute angle, the simplified form of
A.
cos2A
B.
sinA
C.
sin2A
D.
cosA
AnswerAnswer: Option D
Solution
Answer: Option D
Solution: