A) \[-16\sqrt{5}\]
B) 20
C) \[4\sqrt{5}\]
D) \[16\sqrt{5}\]
Correct Answer: C
Solution :
From\[c=\pm a\sqrt{1+{{m}^{2}}}\], Here, \[a=4,\,m=2\] \[\therefore \,c=\pm 4\sqrt{1+4}=\pm 4\sqrt{5}\].You need to login to perform this action.
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