MCQ practice · SSC Higher Mathematics Board questions · Chapter 8: Trigonometry
If cotA and cosecA have opposite signs, what is cosecA?
Think it through first, then pick an option.
- a 25/7
- b 24/7
- c −24/7
- d −25/7
Answer and explanation
Correct answer: d −25/7
tanA = 7/24 and cotA positive; cosecA has the opposite sign ⇒ sinA negative (3rd quadrant); cosecA = −25/7.
Why the other options are wrong
- a 25/7: 25/7 is positive; cotA is positive and cosecA has the opposite sign, so it is negative.
- b 24/7: 24/7 is positive and the wrong value; cosecA is of the form 25/7.
- c −24/7: −24/7 has the wrong size; cosecA = −25/7.
Your account is open, so all 30,000+ MCQs from every chapter are yours. Start practising SSC Higher Mathematics →
Want to keep going?
A free account carries you on to the next questions and opens 30,000+ MCQs from every chapter. Join before launch and Chirkut bundles are 60% off.
The ones you missed, worth one more look