Questions  

Which of the following values are positive?

 (a) cos120°

 (b) sin210°

 (c) tan240°

 (d) cos315°

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By Expert Faculty of Sri Chaitanya
a
(c) and (b)
b
(c) and (d)
c
(a) and (d)
d
(a) and (b)
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detailed solution

Correct option is B

240°lies in 3 rd quadrant and tan in 3rd quadrant is positive.315° lies in 4th quadrant and cos in 4th quadrant is positive.

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