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Question

The distance between the points (a cos25,0) and (0,a cos65) is ___.


A

acos35

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B

a

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C

0.5a

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D

2a

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Solution

The correct option is B

a


Required distance
=a2cos225+a2cos265=a2cos225+a2cos2(9025)=a2cos225+a2sin225=a2(cos225+sin225)=a2(1)=a


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