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Q.

Which of the following inequalities is true ?

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a

$\sin 10 > 0, \cos 8 < 0$

b

$\sin 10 < 0, \cos 8 > 0$

c

$\sin 10 < 0, \cos 8 < 0$

d

$\sin 10 > 0, \cos 8 > 0$

answer is C.

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Detailed Solution

$1 = 57^{0} 29 \Rightarrow 1 ≅ 57^{0} \sin 10 < 0, \cos 8 < 0, 10 \in Q_{3} 8 \in Q_{2}$

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