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Trigonometric Ratios

Which of the ...

Question

Which of the trigonometric ratios are positive for 250^o

A

cosx and secx

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B

sinx and cosecx

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C

sinx and cosx

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D

tanx and cotx

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Solution

The correct option is D
tanx and cotx

We know that 250^o is in third quadrant. In third quadrant, only tanx and cotx are positive. Therefore, tan250^o and cot250^o are positive.

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