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Q.

If sinθ+cosecθ=2then value of sin10θ+cosec10θ=_____

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a

2

b

24

c

22

d

23

answer is C.

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Detailed Solution

 sinθ+cosecθ=2
 sinθ+1sinθ=2
 sin2θ2sinθ+1=0
 sinθ=1
 sin10θ+cosec10θ=1+1=2   

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