Q.
In which one of the following intervals the inequality sinx < cosx < tanx < cotx can hold good?
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a
7π4,2π
b
3π4,π
c
5π4,3π2
d
0,π4
answer is D.
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Detailed Solution
In the second quadrant, sinx ( cosx is false, as sinx is positive and cosx is negative. In the fourth quadrant, cosx
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