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log(10)sinx+log(10)cosx=-1 , log(10)(sin...

`log_(10)sinx+log_(10)cosx=-1 , log_(10)(sinx+cosx)=1/2(log_(10)n-1)` Then n=

A

9

B

20

C

16

D

12

Text Solution

Verified by Experts

The correct Answer is:
D
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