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If ABCD is a cyclic quadrilateral, then ...

If ABCD is a cyclic quadrilateral, then the value of cosA-cosB+cosC-cosD is equal to

A

1

B

0

C

`-1`

D

none of these

Text Solution

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The correct Answer is:
B
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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
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