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If secalpha=(13)/(5) where 270^(@)ltalph...

If sec`alpha=(13)/(5)` where `270^(@)ltalphalt360^(@)` then what is sin `alpha` equal to ?

A

`5//13`

B

`12//13`

C

`-12//13`

D

`-13//12`

Text Solution

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The correct Answer is:
C
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