NDA2022MathematicsTrigonometric Ratios & IdentitiesActual
If =- 5 12 , then what can be the value of ?
Options
- A5 13 but cannot be - 5 13
- B- 5 13 but cannot be 5 13
- C5 13 or - 5 13
- DNone of the above
Correct answer
C. 5 13 or - 5 13
Step-by-step solution
= -5 12 = p b ; Let p=5 k b=12 k h = p^2+b^2 = 25 k^2+144 k^2 =13 k Since value of is - ve therefore lies in 2 nd and 3rd quadrant. = p h = 5 13