Trigonometrymedium · Past Paper
In a right-angled triangle, if cot A = 12/5, find the value of cosec A.
A13/5
B5/13
C12/13
D13/12
✓ Correct Answer: A — 13/5
b=12, p=5. Using Pythagoras, h=13. cosec A = h/p = 13/5.
Share this question
More from Trigonometry
- A tower subtends an angle α at a point A and elevation of top of a flagstaff on it is β. If h is flagstaff height, tower height is:
- If cos A + cos B = 0 and sin A + sin B = 0, then cos(A-B) is:
- Express sin 3θ in terms of sin θ.
- Evaluate: cos 12° + cos 84° + cos 132° + cos 156°.
- Evaluate: 5 sin^2 30 + cos^2 45 - 4 tan^2 30