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Questions  

The values of sincos135+cosec1135, is 

a
4865
b
1565
c
3365
d
6365

detailed solution

Correct option is D

sin⁡cos−1⁡35+cosec−1⁡135=sin⁡cos−1⁡35cos⁡cosec−1⁡135+cos⁡cos−1⁡35=sin⁡sin−1⁡45cos⁡cos−1⁡1213+cos⁡cos−1⁡35sin⁡sin−1⁡513=45×1213+35×513=6365

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