1.

What is the distance between the pointsP(m cos 2α, m sin 2α) andQ(m cos 2β, m sin 2β) ?

A. |2m sin (α - β)|
B. |2m cos (α - β)|
C. |m sin (2α - 2β)|
D. |m cos (2α - 2β)|
Answer» B. |2m cos (α - β)|


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