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यदि `sintheta=(5)/(13)` और `theta` न्यून कोण हो तो `sqrt ((cottheta+tantheta))` का मान कितना है ?
A. `(2)/(sqrt(5))`
B. `13(2)/(sqrt(5))`
C. `(-2)/(sqrt(5))`
D. `(13)/(2sqrt(15))`

1 Answer

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Best answer
Correct Answer - d
`sin theta=(5)/sqrt(3)`
image
`BC=sqrt(169-25)=12`
`sqrt(cottheta+tantheta)=sqrt((12)/(5)+(5)/(12))`
`=sqrt((169)/(60))=(13)/(2sqrt(15))`

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