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Question: Answered & Verified by Expert
Let θ be an angle in the standard position such that the point (-5,12) lies on its terminal side, then
MathematicsTrigonometric Ratios & IdentitiesAP EAMCETAP EAMCET 2021 (20 Aug Shift 2)
Options:
  • A |sinθ|=-sinθ
  • B |cosθ|=cosθ
  • C |tanθ|=-tanθ
  • D |cosecθ|=-cosecθ
Solution:
1045 Upvotes Verified Answer
The correct answer is: |tanθ|=-tanθ

Clearly, the point -5,12 lies in second quadrant. Since, it's x-coordinate is negative and y-coordinate is positive.

We know that, in second quadrant sinθ & cosecθ are positive and cosθ, secθ, tanθ & cotθ are negative.

So, by using definition of modulus function, we get |sinθ|=sinθ|cosθ|=-cosθ|tanθ|=-tanθ|cosecθ|=cosecθ.

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