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cos 1^(@) ."" cos 2^(@) ."" cos 3^(...

` cos 1^(@) ."" cos 2^(@) ."" cos 3^(@) "…." cos 179 ^(@)=`

A

0

B

1

C

`-1/2`

D

`-1`

Text Solution

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The correct Answer is:
A
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS -COMPETITIVE THINKING
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