Q.
The values of sincos−135+cosec−1135, is
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a
4865
b
1565
c
3365
d
6365
answer is D.
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Detailed Solution
sincos−135+cosec−1135=sincos−135coscosec−1135+coscos−135=sinsin−145coscos−11213+coscos−135sinsin−1513=45×1213+35×513=6365
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